Finding the Third Proportional to 31,513,456.50 and 68,548,359

Step by Step Solution

1. Step 1: Write the proportion equation
   31,513,456.50 : 68,548,359 = 68,548,359 : x
2. Step 2: Convert to fraction form
   31,513,456.50/68,548,359 = 68,548,359/x
3. Step 3: Cross multiply
   31,513,456.50x = 68,548,359 × 68,548,359
4. Step 4: Simplify right side
   31,513,456.50x = 4,698,877,521,592,881
5. Step 5: Solve for x
   x = 4,698,877,521,592,881/31,513,456.50
6. Step 6: Final answer
   x = 149,107,017.87