Finding the Third Proportional to 31,132.71 and 67,186.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,132.71 : 67,186.18 = 67,186.18 : x
2. Step 2: Convert to fraction form
   31,132.71/67,186.18 = 67,186.18/x
3. Step 3: Cross multiply
   31,132.71x = 67,186.18 × 67,186.18
4. Step 4: Simplify right side
   31,132.71x = 4,513,982,478.56
5. Step 5: Solve for x
   x = 4,513,982,478.56/31,132.71
6. Step 6: Final answer
   x = 144,991.62