Finding the Third Proportional to 155.38 and 234.31

Step by Step Solution

1. Step 1: Write the proportion equation
   155.38 : 234.31 = 234.31 : x
2. Step 2: Convert to fraction form
   155.38/234.31 = 234.31/x
3. Step 3: Cross multiply
   155.38x = 234.31 × 234.31
4. Step 4: Simplify right side
   155.38x = 54,902.35
5. Step 5: Solve for x
   x = 54,902.35/155.38
6. Step 6: Final answer
   x = 353.35