Finding the Third Proportional to 455,553,796.50 and 680,345,487

Step by Step Solution

1. Step 1: Write the proportion equation
   455,553,796.50 : 680,345,487 = 680,345,487 : x
2. Step 2: Convert to fraction form
   455,553,796.50/680,345,487 = 680,345,487/x
3. Step 3: Cross multiply
   455,553,796.50x = 680,345,487 × 680,345,487
4. Step 4: Simplify right side
   455,553,796.50x = 462,869,981,681,267,200
5. Step 5: Solve for x
   x = 462,869,981,681,267,200/455,553,796.50
6. Step 6: Final answer
   x = 1,016,059,980.70