Finding the Third Proportional to 9,142 and 12,436

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142 : 12,436 = 12,436 : x
2. Step 2: Convert to fraction form
   9,142/12,436 = 12,436/x
3. Step 3: Cross multiply
   9,142x = 12,436 × 12,436
4. Step 4: Simplify right side
   9,142x = 154,654,096
5. Step 5: Solve for x
   x = 154,654,096/9,142
6. Step 6: Final answer
   x = 16,916.88