Finding the Third Proportional to 39,909 and 59,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,909 : 59,863.50 = 59,863.50 : x
2. Step 2: Convert to fraction form
   39,909/59,863.50 = 59,863.50/x
3. Step 3: Cross multiply
   39,909x = 59,863.50 × 59,863.50
4. Step 4: Simplify right side
   39,909x = 3,583,638,632.25
5. Step 5: Solve for x
   x = 3,583,638,632.25/39,909
6. Step 6: Final answer
   x = 89,795.25