Finding the Third Proportional to 49,561.50 and 79,800.75

Step by Step Solution

1. Step 1: Write the proportion equation
   49,561.50 : 79,800.75 = 79,800.75 : x
2. Step 2: Convert to fraction form
   49,561.50/79,800.75 = 79,800.75/x
3. Step 3: Cross multiply
   49,561.50x = 79,800.75 × 79,800.75
4. Step 4: Simplify right side
   49,561.50x = 6,368,159,700.56
5. Step 5: Solve for x
   x = 6,368,159,700.56/49,561.50
6. Step 6: Final answer
   x = 128,490.05