Finding the Third Proportional to 39,648.38 and 53,821.13

Step by Step Solution

1. Step 1: Write the proportion equation
   39,648.38 : 53,821.13 = 53,821.13 : x
2. Step 2: Convert to fraction form
   39,648.38/53,821.13 = 53,821.13/x
3. Step 3: Cross multiply
   39,648.38x = 53,821.13 × 53,821.13
4. Step 4: Simplify right side
   39,648.38x = 2,896,713,496.27
5. Step 5: Solve for x
   x = 2,896,713,496.27/39,648.38
6. Step 6: Final answer
   x = 73,060.08