Finding the Third Proportional to 7,139.25 and 10,981.13

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139.25 : 10,981.13 = 10,981.13 : x
2. Step 2: Convert to fraction form
   7,139.25/10,981.13 = 10,981.13/x
3. Step 3: Cross multiply
   7,139.25x = 10,981.13 × 10,981.13
4. Step 4: Simplify right side
   7,139.25x = 120,585,106.27
5. Step 5: Solve for x
   x = 120,585,106.27/7,139.25
6. Step 6: Final answer
   x = 16,890.44