Finding the Third Proportional to 81,753.75 and 109,866.38

Step by Step Solution

1. Step 1: Write the proportion equation
   81,753.75 : 109,866.38 = 109,866.38 : x
2. Step 2: Convert to fraction form
   81,753.75/109,866.38 = 109,866.38/x
3. Step 3: Cross multiply
   81,753.75x = 109,866.38 × 109,866.38
4. Step 4: Simplify right side
   81,753.75x = 12,070,620,355.64
5. Step 5: Solve for x
   x = 12,070,620,355.64/81,753.75
6. Step 6: Final answer
   x = 147,646.08