Finding the Third Proportional to 39,919.50 and 59,109.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,919.50 : 59,109.75 = 59,109.75 : x
2. Step 2: Convert to fraction form
   39,919.50/59,109.75 = 59,109.75/x
3. Step 3: Cross multiply
   39,919.50x = 59,109.75 × 59,109.75
4. Step 4: Simplify right side
   39,919.50x = 3,493,962,545.06
5. Step 5: Solve for x
   x = 3,493,962,545.06/39,919.50
6. Step 6: Final answer
   x = 87,525.21