Finding the Third Proportional to 51,646.50 and 79,747.88

Step by Step Solution

1. Step 1: Write the proportion equation
   51,646.50 : 79,747.88 = 79,747.88 : x
2. Step 2: Convert to fraction form
   51,646.50/79,747.88 = 79,747.88/x
3. Step 3: Cross multiply
   51,646.50x = 79,747.88 × 79,747.88
4. Step 4: Simplify right side
   51,646.50x = 6,359,723,567.02
5. Step 5: Solve for x
   x = 6,359,723,567.02/51,646.50
6. Step 6: Final answer
   x = 123,139.49