Finding the Third Proportional to 8,436 and 15,210

Step by Step Solution

1. Step 1: Write the proportion equation
   8,436 : 15,210 = 15,210 : x
2. Step 2: Convert to fraction form
   8,436/15,210 = 15,210/x
3. Step 3: Cross multiply
   8,436x = 15,210 × 15,210
4. Step 4: Simplify right side
   8,436x = 231,344,100
5. Step 5: Solve for x
   x = 231,344,100/8,436
6. Step 6: Final answer
   x = 27,423.44