Finding the Third Proportional to 6,660 and 12,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,660 : 12,280.50 = 12,280.50 : x
2. Step 2: Convert to fraction form
   6,660/12,280.50 = 12,280.50/x
3. Step 3: Cross multiply
   6,660x = 12,280.50 × 12,280.50
4. Step 4: Simplify right side
   6,660x = 150,810,680.25
5. Step 5: Solve for x
   x = 150,810,680.25/6,660
6. Step 6: Final answer
   x = 22,644.25