Finding the Third Proportional to 39,451.50 and 53,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,451.50 : 53,158.50 = 53,158.50 : x
2. Step 2: Convert to fraction form
   39,451.50/53,158.50 = 53,158.50/x
3. Step 3: Cross multiply
   39,451.50x = 53,158.50 × 53,158.50
4. Step 4: Simplify right side
   39,451.50x = 2,825,826,122.25
5. Step 5: Solve for x
   x = 2,825,826,122.25/39,451.50
6. Step 6: Final answer
   x = 71,627.85