Finding the Third Proportional to 43,139.25 and 67,685.63

Step by Step Solution

1. Step 1: Write the proportion equation
   43,139.25 : 67,685.63 = 67,685.63 : x
2. Step 2: Convert to fraction form
   43,139.25/67,685.63 = 67,685.63/x
3. Step 3: Cross multiply
   43,139.25x = 67,685.63 × 67,685.63
4. Step 4: Simplify right side
   43,139.25x = 4,581,343,831.64
5. Step 5: Solve for x
   x = 4,581,343,831.64/43,139.25
6. Step 6: Final answer
   x = 106,198.97