Finding the Third Proportional to 30.76 and 43.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30.76 : 43.42 = 43.42 : x
2. Step 2: Convert to fraction form
   30.76/43.42 = 43.42/x
3. Step 3: Cross multiply
   30.76x = 43.42 × 43.42
4. Step 4: Simplify right side
   30.76x = 1,885.12
5. Step 5: Solve for x
   x = 1,885.12/30.76
6. Step 6: Final answer
   x = 61.28