Finding the Third Proportional to 12,679.50 and 17,775.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,679.50 : 17,775.75 = 17,775.75 : x
2. Step 2: Convert to fraction form
   12,679.50/17,775.75 = 17,775.75/x
3. Step 3: Cross multiply
   12,679.50x = 17,775.75 × 17,775.75
4. Step 4: Simplify right side
   12,679.50x = 315,977,288.06
5. Step 5: Solve for x
   x = 315,977,288.06/12,679.50
6. Step 6: Final answer
   x = 24,920.33