In order to solve $ \color{blue}{ -125000x^{3}+251250x^{2}-92625x = 0 } $, first we need to factor our $ x $.
$$ -125000x^{3}+251250x^{2}-92625x = x \left( -125000x^{2}+251250x-92625 \right) $$$ x = 0 $ is a root of multiplicity $ 1 $.
The remaining roots can be found by solving equation $ -125000x^{2}+251250x-92625 = 0$.
$ -125000x^{2}+251250x-92625 = 0 $ is a quadratic equation.
You can use step-by-step quadratic equation solver to see a detailed explanation on how to solve this equation.