Finding the Third Proportional to 39,916 and 59,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,916 : 59,879.50 = 59,879.50 : x
2. Step 2: Convert to fraction form
   39,916/59,879.50 = 59,879.50/x
3. Step 3: Cross multiply
   39,916x = 59,879.50 × 59,879.50
4. Step 4: Simplify right side
   39,916x = 3,585,554,520.25
5. Step 5: Solve for x
   x = 3,585,554,520.25/39,916
6. Step 6: Final answer
   x = 89,827.50