Finding the Third Proportional to 58,542 and 138,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,542 : 138,151.50 = 138,151.50 : x
2. Step 2: Convert to fraction form
   58,542/138,151.50 = 138,151.50/x
3. Step 3: Cross multiply
   58,542x = 138,151.50 × 138,151.50
4. Step 4: Simplify right side
   58,542x = 19,085,836,952.25
5. Step 5: Solve for x
   x = 19,085,836,952.25/58,542
6. Step 6: Final answer
   x = 326,019.56