Finding the Third Proportional to 8,622.50 and 13,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,622.50 : 13,355.50 = 13,355.50 : x
2. Step 2: Convert to fraction form
   8,622.50/13,355.50 = 13,355.50/x
3. Step 3: Cross multiply
   8,622.50x = 13,355.50 × 13,355.50
4. Step 4: Simplify right side
   8,622.50x = 178,369,380.25
5. Step 5: Solve for x
   x = 178,369,380.25/8,622.50
6. Step 6: Final answer
   x = 20,686.50