Finding the Third Proportional to 10,728 and 12,200

Step by Step Solution

1. Step 1: Write the proportion equation
   10,728 : 12,200 = 12,200 : x
2. Step 2: Convert to fraction form
   10,728/12,200 = 12,200/x
3. Step 3: Cross multiply
   10,728x = 12,200 × 12,200
4. Step 4: Simplify right side
   10,728x = 148,840,000
5. Step 5: Solve for x
   x = 148,840,000/10,728
6. Step 6: Final answer
   x = 13,873.97