Finding the Third Proportional to 51,647.50 and 79,806.75

Step by Step Solution

1. Step 1: Write the proportion equation
   51,647.50 : 79,806.75 = 79,806.75 : x
2. Step 2: Convert to fraction form
   51,647.50/79,806.75 = 79,806.75/x
3. Step 3: Cross multiply
   51,647.50x = 79,806.75 × 79,806.75
4. Step 4: Simplify right side
   51,647.50x = 6,369,117,345.56
5. Step 5: Solve for x
   x = 6,369,117,345.56/51,647.50
6. Step 6: Final answer
   x = 123,318.99