Finding the Third Proportional to 12,276 and 13,896

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276 : 13,896 = 13,896 : x
2. Step 2: Convert to fraction form
   12,276/13,896 = 13,896/x
3. Step 3: Cross multiply
   12,276x = 13,896 × 13,896
4. Step 4: Simplify right side
   12,276x = 193,098,816
5. Step 5: Solve for x
   x = 193,098,816/12,276
6. Step 6: Final answer
   x = 15,729.78