Finding the Third Proportional to 144.38 and 298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144.38 : 298.50 = 298.50 : x
2. Step 2: Convert to fraction form
   144.38/298.50 = 298.50/x
3. Step 3: Cross multiply
   144.38x = 298.50 × 298.50
4. Step 4: Simplify right side
   144.38x = 89,102.25
5. Step 5: Solve for x
   x = 89,102.25/144.38
6. Step 6: Final answer
   x = 617.16