Finding the Third Proportional to 10,920 and 17,230

Step by Step Solution

1. Step 1: Write the proportion equation
   10,920 : 17,230 = 17,230 : x
2. Step 2: Convert to fraction form
   10,920/17,230 = 17,230/x
3. Step 3: Cross multiply
   10,920x = 17,230 × 17,230
4. Step 4: Simplify right side
   10,920x = 296,872,900
5. Step 5: Solve for x
   x = 296,872,900/10,920
6. Step 6: Final answer
   x = 27,186.16