Finding the Third Proportional to 10,992 and 17,218

Step by Step Solution

1. Step 1: Write the proportion equation
   10,992 : 17,218 = 17,218 : x
2. Step 2: Convert to fraction form
   10,992/17,218 = 17,218/x
3. Step 3: Cross multiply
   10,992x = 17,218 × 17,218
4. Step 4: Simplify right side
   10,992x = 296,459,524
5. Step 5: Solve for x
   x = 296,459,524/10,992
6. Step 6: Final answer
   x = 26,970.48