Finding the Third Proportional to 300.43 and 656.38

Step by Step Solution

1. Step 1: Write the proportion equation
   300.43 : 656.38 = 656.38 : x
2. Step 2: Convert to fraction form
   300.43/656.38 = 656.38/x
3. Step 3: Cross multiply
   300.43x = 656.38 × 656.38
4. Step 4: Simplify right side
   300.43x = 430,840.96
5. Step 5: Solve for x
   x = 430,840.96/300.43
6. Step 6: Final answer
   x = 1,434.09