Finding the Third Proportional to 2.82 and 5.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2.82 : 5.54 = 5.54 : x
2. Step 2: Convert to fraction form
   2.82/5.54 = 5.54/x
3. Step 3: Cross multiply
   2.82x = 5.54 × 5.54
4. Step 4: Simplify right side
   2.82x = 30.72
5. Step 5: Solve for x
   x = 30.72/2.82
6. Step 6: Final answer
   x = 10.90