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We combine VI photometry from OGLE-III with VVV and 2MASS measurements ofE(J-K_{s}) to resolve the longstanding problem of the non-standard opticalextinction toward the Galactic bulge. We show that the extinction is well-fitby the relation A_{I} = 0.7465*E(V-I) + 1.3700*E(J-K_{s}), or, equivalently,A_{I} = 1.217*E(V-I)(1+1.126*(E(J-K_{s})/E(V-I)-0.3433)). The optical andnear-IR reddening law toward the inner Galaxy approximately follows an R_{V}\approx 2.5 extinction curve with a dispersion {\sigma}_{R_{V}} \approx 0.2,consistent with extragalactic investigations of the hosts of type Ia SNe.Differential reddening is shown to be significant on scales as small as as ourmean field size of 6', with the 1{\sigma} dispersion in reddening averaging 9%of total reddening for our fields. The intrinsic luminosity parameters of theGalactic bulge red clump (RC) are derived to be (M_{I,RC}, \sigma_{I,RC,0},(V-I)_{RC,0}, \sigma_{(V-I)_{RC}}, (J-K_{s})_{RC,0}) = (-0.12, 0.09, 1.06,0.121, 0.66). Our measurements of the RC brightness, brightness dispersion andnumber counts allow us to estimate several Galactic bulge structuralparameters. We estimate a distance to the Galactic center of 8.20 kpc,resolving previous discrepancies in distance determinations to the bulge basedon I-band observations. We measure an upper bound on the tilt {\alpha} \approx40{\deg}. between the bar's major axis and the Sun-Galactic center line ofsight, though our brightness peaks are consistent with predictions of an N-bodymodel oriented at {\alpha} \approx 25{\deg}. The number of RC stars suggests atotal stellar mass for the Galactic bulge of 2.0*10^{10} M_{\odot}, if oneassumes a Salpeter IMF.

Reddening and Extinction Toward the Galactic Bulge from OGLE-III: The Inner Milky Way's Rv ~ 2.5 Extinction Curve