Finding the Third Proportional to 39,649.50 and 81,119.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,649.50 : 81,119.25 = 81,119.25 : x
2. Step 2: Convert to fraction form
   39,649.50/81,119.25 = 81,119.25/x
3. Step 3: Cross multiply
   39,649.50x = 81,119.25 × 81,119.25
4. Step 4: Simplify right side
   39,649.50x = 6,580,332,720.56
5. Step 5: Solve for x
   x = 6,580,332,720.56/39,649.50
6. Step 6: Final answer
   x = 165,962.56