Finding the Third Proportional to 9,921 and 13,167

Step by Step Solution

1. Step 1: Write the proportion equation
   9,921 : 13,167 = 13,167 : x
2. Step 2: Convert to fraction form
   9,921/13,167 = 13,167/x
3. Step 3: Cross multiply
   9,921x = 13,167 × 13,167
4. Step 4: Simplify right side
   9,921x = 173,369,889
5. Step 5: Solve for x
   x = 173,369,889/9,921
6. Step 6: Final answer
   x = 17,475.04