Finding the Third Proportional to 12,280 and 13,864

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280 : 13,864 = 13,864 : x
2. Step 2: Convert to fraction form
   12,280/13,864 = 13,864/x
3. Step 3: Cross multiply
   12,280x = 13,864 × 13,864
4. Step 4: Simplify right side
   12,280x = 192,210,496
5. Step 5: Solve for x
   x = 192,210,496/12,280
6. Step 6: Final answer
   x = 15,652.32