Finding the Third Proportional to 31,684,979.25 and 67,917,359.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,684,979.25 : 67,917,359.25 = 67,917,359.25 : x
2. Step 2: Convert to fraction form
   31,684,979.25/67,917,359.25 = 67,917,359.25/x
3. Step 3: Cross multiply
   31,684,979.25x = 67,917,359.25 × 67,917,359.25
4. Step 4: Simplify right side
   31,684,979.25x = 4,612,767,687,493,561
5. Step 5: Solve for x
   x = 4,612,767,687,493,561/31,684,979.25
6. Step 6: Final answer
   x = 145,582,159.01