Finding the Third Proportional to 27,687,046.50 and 42,981,687

Step by Step Solution

1. Step 1: Write the proportion equation
   27,687,046.50 : 42,981,687 = 42,981,687 : x
2. Step 2: Convert to fraction form
   27,687,046.50/42,981,687 = 42,981,687/x
3. Step 3: Cross multiply
   27,687,046.50x = 42,981,687 × 42,981,687
4. Step 4: Simplify right side
   27,687,046.50x = 1,847,425,417,365,969
5. Step 5: Solve for x
   x = 1,847,425,417,365,969/27,687,046.50
6. Step 6: Final answer
   x = 66,725,261.48