Finding the Third Proportional to 71.50 and 155.38

Step by Step Solution

1. Step 1: Write the proportion equation
   71.50 : 155.38 = 155.38 : x
2. Step 2: Convert to fraction form
   71.50/155.38 = 155.38/x
3. Step 3: Cross multiply
   71.50x = 155.38 × 155.38
4. Step 4: Simplify right side
   71.50x = 24,141.39
5. Step 5: Solve for x
   x = 24,141.39/71.50
6. Step 6: Final answer
   x = 337.64