Finding the Third Proportional to 11,224 and 12,440

Step by Step Solution

1. Step 1: Write the proportion equation
   11,224 : 12,440 = 12,440 : x
2. Step 2: Convert to fraction form
   11,224/12,440 = 12,440/x
3. Step 3: Cross multiply
   11,224x = 12,440 × 12,440
4. Step 4: Simplify right side
   11,224x = 154,753,600
5. Step 5: Solve for x
   x = 154,753,600/11,224
6. Step 6: Final answer
   x = 13,787.74