Finding the Third Proportional to 31,643.16 and 67,713.47

Step by Step Solution

1. Step 1: Write the proportion equation
   31,643.16 : 67,713.47 = 67,713.47 : x
2. Step 2: Convert to fraction form
   31,643.16/67,713.47 = 67,713.47/x
3. Step 3: Cross multiply
   31,643.16x = 67,713.47 × 67,713.47
4. Step 4: Simplify right side
   31,643.16x = 4,585,113,850.16
5. Step 5: Solve for x
   x = 4,585,113,850.16/31,643.16
6. Step 6: Final answer
   x = 144,900.65