Finding the Third Proportional to 249.75 and 350.72

Step by Step Solution

1. Step 1: Write the proportion equation
   249.75 : 350.72 = 350.72 : x
2. Step 2: Convert to fraction form
   249.75/350.72 = 350.72/x
3. Step 3: Cross multiply
   249.75x = 350.72 × 350.72
4. Step 4: Simplify right side
   249.75x = 123,003.64
5. Step 5: Solve for x
   x = 123,003.64/249.75
6. Step 6: Final answer
   x = 492.51