Where you going to turn a consistent 8% for 50 years?
And if you do, inflation (construction cost impact) will be more than 3%.
And yes, I got $186M ($185.9M) also.
Side thought: Would $186M rebuild Ralph/Oly/Betty today -> No Ralph to oversee costs as the general contractor and inflated construction material costs. Hint: $113M original price; assume 3% annual increase; 20 years old -> $204M