Finding the Third Proportional to 10,990.27 and 17,007.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.27 : 17,007.47 = 17,007.47 : x
2. Step 2: Convert to fraction form
   10,990.27/17,007.47 = 17,007.47/x
3. Step 3: Cross multiply
   10,990.27x = 17,007.47 × 17,007.47
4. Step 4: Simplify right side
   10,990.27x = 289,253,993.28
5. Step 5: Solve for x
   x = 289,253,993.28/10,990.27
6. Step 6: Final answer
   x = 26,319.11