Finding the Third Proportional to 12.50 and 13.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12.50 : 13.56 = 13.56 : x
2. Step 2: Convert to fraction form
   12.50/13.56 = 13.56/x
3. Step 3: Cross multiply
   12.50x = 13.56 × 13.56
4. Step 4: Simplify right side
   12.50x = 183.94
5. Step 5: Solve for x
   x = 183.94/12.50
6. Step 6: Final answer
   x = 14.72