Finding the Third Proportional to 72.38 and 149.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72.38 : 149.25 = 149.25 : x
2. Step 2: Convert to fraction form
   72.38/149.25 = 149.25/x
3. Step 3: Cross multiply
   72.38x = 149.25 × 149.25
4. Step 4: Simplify right side
   72.38x = 22,275.56
5. Step 5: Solve for x
   x = 22,275.56/72.38
6. Step 6: Final answer
   x = 307.78