For the following reaction, equilibrium constant are given: `S(s)+O_(2)(g)to SO_(2)(g) , K_(1)=10^(52)` `2S(s)+3O_(2)(g) to 2SO_(3)(g) , K_(2)10^(129)` The equilibrium constant constant for the reaction, `2SO_(2)(g)+O_(2)(g)to2SO_(3)2SO_(3)(g) ` is :