Finding the Third Proportional to 31,411.55 and 68,470.95

Step by Step Solution

1. Step 1: Write the proportion equation
   31,411.55 : 68,470.95 = 68,470.95 : x
2. Step 2: Convert to fraction form
   31,411.55/68,470.95 = 68,470.95/x
3. Step 3: Cross multiply
   31,411.55x = 68,470.95 × 68,470.95
4. Step 4: Simplify right side
   31,411.55x = 4,688,270,351.99
5. Step 5: Solve for x
   x = 4,688,270,351.99/31,411.55
6. Step 6: Final answer
   x = 149,253.09