Finding the Third Proportional to 155.25 and 335.81

Step by Step Solution

1. Step 1: Write the proportion equation
   155.25 : 335.81 = 335.81 : x
2. Step 2: Convert to fraction form
   155.25/335.81 = 335.81/x
3. Step 3: Cross multiply
   155.25x = 335.81 × 335.81
4. Step 4: Simplify right side
   155.25x = 112,770.04
5. Step 5: Solve for x
   x = 112,770.04/155.25
6. Step 6: Final answer
   x = 726.38