Finding the Third Proportional to 3.98 and 5.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3.98 : 5.98 = 5.98 : x
2. Step 2: Convert to fraction form
   3.98/5.98 = 5.98/x
3. Step 3: Cross multiply
   3.98x = 5.98 × 5.98
4. Step 4: Simplify right side
   3.98x = 35.72
5. Step 5: Solve for x
   x = 35.72/3.98
6. Step 6: Final answer
   x = 8.96