Finding the Third Proportional to 141.72 and 228.42

Step by Step Solution

1. Step 1: Write the proportion equation
   141.72 : 228.42 = 228.42 : x
2. Step 2: Convert to fraction form
   141.72/228.42 = 228.42/x
3. Step 3: Cross multiply
   141.72x = 228.42 × 228.42
4. Step 4: Simplify right side
   141.72x = 52,176.55
5. Step 5: Solve for x
   x = 52,176.55/141.72
6. Step 6: Final answer
   x = 368.17