Finding the Third Proportional to 357.94 and 725.72

Step by Step Solution

1. Step 1: Write the proportion equation
   357.94 : 725.72 = 725.72 : x
2. Step 2: Convert to fraction form
   357.94/725.72 = 725.72/x
3. Step 3: Cross multiply
   357.94x = 725.72 × 725.72
4. Step 4: Simplify right side
   357.94x = 526,667.70
5. Step 5: Solve for x
   x = 526,667.70/357.94
6. Step 6: Final answer
   x = 1,471.40