Finding the Third Proportional to 10,990 and 17,003

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990 : 17,003 = 17,003 : x
2. Step 2: Convert to fraction form
   10,990/17,003 = 17,003/x
3. Step 3: Cross multiply
   10,990x = 17,003 × 17,003
4. Step 4: Simplify right side
   10,990x = 289,102,009
5. Step 5: Solve for x
   x = 289,102,009/10,990
6. Step 6: Final answer
   x = 26,305.92