Finding the Third Proportional to 39,945.75 and 57,542.63

Step by Step Solution

1. Step 1: Write the proportion equation
   39,945.75 : 57,542.63 = 57,542.63 : x
2. Step 2: Convert to fraction form
   39,945.75/57,542.63 = 57,542.63/x
3. Step 3: Cross multiply
   39,945.75x = 57,542.63 × 57,542.63
4. Step 4: Simplify right side
   39,945.75x = 3,311,153,691.89
5. Step 5: Solve for x
   x = 3,311,153,691.89/39,945.75
6. Step 6: Final answer
   x = 82,891.26