Finding the Third Proportional to 9,420 and 12,504

Step by Step Solution

1. Step 1: Write the proportion equation
   9,420 : 12,504 = 12,504 : x
2. Step 2: Convert to fraction form
   9,420/12,504 = 12,504/x
3. Step 3: Cross multiply
   9,420x = 12,504 × 12,504
4. Step 4: Simplify right side
   9,420x = 156,350,016
5. Step 5: Solve for x
   x = 156,350,016/9,420
6. Step 6: Final answer
   x = 16,597.67