Finding the Third Proportional to 39,001.50 and 57,039.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,001.50 : 57,039.75 = 57,039.75 : x
2. Step 2: Convert to fraction form
   39,001.50/57,039.75 = 57,039.75/x
3. Step 3: Cross multiply
   39,001.50x = 57,039.75 × 57,039.75
4. Step 4: Simplify right side
   39,001.50x = 3,253,533,080.06
5. Step 5: Solve for x
   x = 3,253,533,080.06/39,001.50
6. Step 6: Final answer
   x = 83,420.72