Finding the Third Proportional to 9,920 and 12,952

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920 : 12,952 = 12,952 : x
2. Step 2: Convert to fraction form
   9,920/12,952 = 12,952/x
3. Step 3: Cross multiply
   9,920x = 12,952 × 12,952
4. Step 4: Simplify right side
   9,920x = 167,754,304
5. Step 5: Solve for x
   x = 167,754,304/9,920
6. Step 6: Final answer
   x = 16,910.72