Finding the Third Proportional to 9.42 and 19.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9.42 : 19.83 = 19.83 : x
2. Step 2: Convert to fraction form
   9.42/19.83 = 19.83/x
3. Step 3: Cross multiply
   9.42x = 19.83 × 19.83
4. Step 4: Simplify right side
   9.42x = 393.15
5. Step 5: Solve for x
   x = 393.15/9.42
6. Step 6: Final answer
   x = 41.73