Finding the Third Proportional to 90,251,875 and 139,517,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,251,875 : 139,517,892.50 = 139,517,892.50 : x
2. Step 2: Convert to fraction form
   90,251,875/139,517,892.50 = 139,517,892.50/x
3. Step 3: Cross multiply
   90,251,875x = 139,517,892.50 × 139,517,892.50
4. Step 4: Simplify right side
   90,251,875x = 19,465,242,327,641,556
5. Step 5: Solve for x
   x = 19,465,242,327,641,556/90,251,875
6. Step 6: Final answer
   x = 215,676,874.61