Finding the Third Proportional to 2.67 and 5.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2.67 : 5.55 = 5.55 : x
2. Step 2: Convert to fraction form
   2.67/5.55 = 5.55/x
3. Step 3: Cross multiply
   2.67x = 5.55 × 5.55
4. Step 4: Simplify right side
   2.67x = 30.85
5. Step 5: Solve for x
   x = 30.85/2.67
6. Step 6: Final answer
   x = 11.55