Finding the Third Proportional to 81,139.50 and 124,794

Step by Step Solution

1. Step 1: Write the proportion equation
   81,139.50 : 124,794 = 124,794 : x
2. Step 2: Convert to fraction form
   81,139.50/124,794 = 124,794/x
3. Step 3: Cross multiply
   81,139.50x = 124,794 × 124,794
4. Step 4: Simplify right side
   81,139.50x = 15,573,542,436
5. Step 5: Solve for x
   x = 15,573,542,436/81,139.50
6. Step 6: Final answer
   x = 191,935.40