Finding the Third Proportional to 7,144.13 and 10,989.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,144.13 : 10,989.38 = 10,989.38 : x
2. Step 2: Convert to fraction form
   7,144.13/10,989.38 = 10,989.38/x
3. Step 3: Cross multiply
   7,144.13x = 10,989.38 × 10,989.38
4. Step 4: Simplify right side
   7,144.13x = 120,766,362.89
5. Step 5: Solve for x
   x = 120,766,362.89/7,144.13
6. Step 6: Final answer
   x = 16,904.29