Finding the Third Proportional to 12,158 and 17,436

Step by Step Solution

1. Step 1: Write the proportion equation
   12,158 : 17,436 = 17,436 : x
2. Step 2: Convert to fraction form
   12,158/17,436 = 17,436/x
3. Step 3: Cross multiply
   12,158x = 17,436 × 17,436
4. Step 4: Simplify right side
   12,158x = 304,014,096
5. Step 5: Solve for x
   x = 304,014,096/12,158
6. Step 6: Final answer
   x = 25,005.27