Finding the Third Proportional to 81,142.50 and 124,798.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,142.50 : 124,798.50 = 124,798.50 : x
2. Step 2: Convert to fraction form
   81,142.50/124,798.50 = 124,798.50/x
3. Step 3: Cross multiply
   81,142.50x = 124,798.50 × 124,798.50
4. Step 4: Simplify right side
   81,142.50x = 15,574,665,602.25
5. Step 5: Solve for x
   x = 15,574,665,602.25/81,142.50
6. Step 6: Final answer
   x = 191,942.15