Finding the Third Proportional to 98,387,309.81 and 215,308,714.78

Step by Step Solution

1. Step 1: Write the proportion equation
   98,387,309.81 : 215,308,714.78 = 215,308,714.78 : x
2. Step 2: Convert to fraction form
   98,387,309.81/215,308,714.78 = 215,308,714.78/x
3. Step 3: Cross multiply
   98,387,309.81x = 215,308,714.78 × 215,308,714.78
4. Step 4: Simplify right side
   98,387,309.81x = 46,357,842,660,753,664
5. Step 5: Solve for x
   x = 46,357,842,660,753,664/98,387,309.81
6. Step 6: Final answer
   x = 471,177,052.70