Finding the Third Proportional to 39,502.69 and 55,648.90

Step by Step Solution

1. Step 1: Write the proportion equation
   39,502.69 : 55,648.90 = 55,648.90 : x
2. Step 2: Convert to fraction form
   39,502.69/55,648.90 = 55,648.90/x
3. Step 3: Cross multiply
   39,502.69x = 55,648.90 × 55,648.90
4. Step 4: Simplify right side
   39,502.69x = 3,096,799,897.31
5. Step 5: Solve for x
   x = 3,096,799,897.31/39,502.69
6. Step 6: Final answer
   x = 78,394.66