Finding the Third Proportional to 2.18 and 5.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2.18 : 5.73 = 5.73 : x
2. Step 2: Convert to fraction form
   2.18/5.73 = 5.73/x
3. Step 3: Cross multiply
   2.18x = 5.73 × 5.73
4. Step 4: Simplify right side
   2.18x = 32.83
5. Step 5: Solve for x
   x = 32.83/2.18
6. Step 6: Final answer
   x = 15.05