Finding the Third Proportional to 98,387,687.50 and 215,309,457.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,387,687.50 : 215,309,457.50 = 215,309,457.50 : x
2. Step 2: Convert to fraction form
   98,387,687.50/215,309,457.50 = 215,309,457.50/x
3. Step 3: Cross multiply
   98,387,687.50x = 215,309,457.50 × 215,309,457.50
4. Step 4: Simplify right side
   98,387,687.50x = 46,358,162,488,944,304
5. Step 5: Solve for x
   x = 46,358,162,488,944,304/98,387,687.50
6. Step 6: Final answer
   x = 471,178,494.66