Finding the Third Proportional to 39,806.50 and 56,591.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,806.50 : 56,591.75 = 56,591.75 : x
2. Step 2: Convert to fraction form
   39,806.50/56,591.75 = 56,591.75/x
3. Step 3: Cross multiply
   39,806.50x = 56,591.75 × 56,591.75
4. Step 4: Simplify right side
   39,806.50x = 3,202,626,168.06
5. Step 5: Solve for x
   x = 3,202,626,168.06/39,806.50
6. Step 6: Final answer
   x = 80,454.85