Finding the Third Proportional to 8,665.50 and 13,443.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.50 : 13,443.75 = 13,443.75 : x
2. Step 2: Convert to fraction form
   8,665.50/13,443.75 = 13,443.75/x
3. Step 3: Cross multiply
   8,665.50x = 13,443.75 × 13,443.75
4. Step 4: Simplify right side
   8,665.50x = 180,734,414.06
5. Step 5: Solve for x
   x = 180,734,414.06/8,665.50
6. Step 6: Final answer
   x = 20,856.78