Finding the Third Proportional to 31,691,425.50 and 68,803,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,691,425.50 : 68,803,321.50 = 68,803,321.50 : x
2. Step 2: Convert to fraction form
   31,691,425.50/68,803,321.50 = 68,803,321.50/x
3. Step 3: Cross multiply
   31,691,425.50x = 68,803,321.50 × 68,803,321.50
4. Step 4: Simplify right side
   31,691,425.50x = 4,733,897,049,432,362
5. Step 5: Solve for x
   x = 4,733,897,049,432,362/31,691,425.50
6. Step 6: Final answer
   x = 149,374,695.99