Finding the Third Proportional to 19.81 and 43.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19.81 : 43.42 = 43.42 : x
2. Step 2: Convert to fraction form
   19.81/43.42 = 43.42/x
3. Step 3: Cross multiply
   19.81x = 43.42 × 43.42
4. Step 4: Simplify right side
   19.81x = 1,885.46
5. Step 5: Solve for x
   x = 1,885.46/19.81
6. Step 6: Final answer
   x = 95.17