Finding the Third Proportional to 273.91 and 401.25

Step by Step Solution

1. Step 1: Write the proportion equation
   273.91 : 401.25 = 401.25 : x
2. Step 2: Convert to fraction form
   273.91/401.25 = 401.25/x
3. Step 3: Cross multiply
   273.91x = 401.25 × 401.25
4. Step 4: Simplify right side
   273.91x = 161,003.62
5. Step 5: Solve for x
   x = 161,003.62/273.91
6. Step 6: Final answer
   x = 587.80