Finding the Third Proportional to 12,436 and 18,240

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436 : 18,240 = 18,240 : x
2. Step 2: Convert to fraction form
   12,436/18,240 = 18,240/x
3. Step 3: Cross multiply
   12,436x = 18,240 × 18,240
4. Step 4: Simplify right side
   12,436x = 332,697,600
5. Step 5: Solve for x
   x = 332,697,600/12,436
6. Step 6: Final answer
   x = 26,752.78