Thanks for your reply Simon.
I was using the formula U=1/2cv^2 to find the needed capacitance.
3,600,000=1/2C50,000^2
3,600,000/1/2=>7,200,000
7,200,000/50000^2=>C=>.00288 in farads
I thought this is telling me the needed capacitor size in farads if I know the amount of energy I want stored...