Finding the Third Proportional to 9,128 and 12,932

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128 : 12,932 = 12,932 : x
2. Step 2: Convert to fraction form
   9,128/12,932 = 12,932/x
3. Step 3: Cross multiply
   9,128x = 12,932 × 12,932
4. Step 4: Simplify right side
   9,128x = 167,236,624
5. Step 5: Solve for x
   x = 167,236,624/9,128
6. Step 6: Final answer
   x = 18,321.28