Finding the Third Proportional to 8,560.50 and 12,564

Step by Step Solution

1. Step 1: Write the proportion equation
   8,560.50 : 12,564 = 12,564 : x
2. Step 2: Convert to fraction form
   8,560.50/12,564 = 12,564/x
3. Step 3: Cross multiply
   8,560.50x = 12,564 × 12,564
4. Step 4: Simplify right side
   8,560.50x = 157,854,096
5. Step 5: Solve for x
   x = 157,854,096/8,560.50
6. Step 6: Final answer
   x = 18,439.82