Finding the Third Proportional to 9,150 and 12,717

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150 : 12,717 = 12,717 : x
2. Step 2: Convert to fraction form
   9,150/12,717 = 12,717/x
3. Step 3: Cross multiply
   9,150x = 12,717 × 12,717
4. Step 4: Simplify right side
   9,150x = 161,722,089
5. Step 5: Solve for x
   x = 161,722,089/9,150
6. Step 6: Final answer
   x = 17,674.55