Finding the Third Proportional to 39,456.50 and 53,160.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,456.50 : 53,160.25 = 53,160.25 : x
2. Step 2: Convert to fraction form
   39,456.50/53,160.25 = 53,160.25/x
3. Step 3: Cross multiply
   39,456.50x = 53,160.25 × 53,160.25
4. Step 4: Simplify right side
   39,456.50x = 2,826,012,180.06
5. Step 5: Solve for x
   x = 2,826,012,180.06/39,456.50
6. Step 6: Final answer
   x = 71,623.49