Finding the Third Proportional to 185,940 and 406,912.50

Step by Step Solution

1. Step 1: Write the proportion equation
   185,940 : 406,912.50 = 406,912.50 : x
2. Step 2: Convert to fraction form
   185,940/406,912.50 = 406,912.50/x
3. Step 3: Cross multiply
   185,940x = 406,912.50 × 406,912.50
4. Step 4: Simplify right side
   185,940x = 165,577,782,656.25
5. Step 5: Solve for x
   x = 165,577,782,656.25/185,940
6. Step 6: Final answer
   x = 890,490.39