Finding the Third Proportional to 81,255 and 124,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,255 : 124,042.50 = 124,042.50 : x
2. Step 2: Convert to fraction form
   81,255/124,042.50 = 124,042.50/x
3. Step 3: Cross multiply
   81,255x = 124,042.50 × 124,042.50
4. Step 4: Simplify right side
   81,255x = 15,386,541,806.25
5. Step 5: Solve for x
   x = 15,386,541,806.25/81,255
6. Step 6: Final answer
   x = 189,361.17