Finding the Third Proportional to 436.43 and 661.92

Step by Step Solution

1. Step 1: Write the proportion equation
   436.43 : 661.92 = 661.92 : x
2. Step 2: Convert to fraction form
   436.43/661.92 = 661.92/x
3. Step 3: Cross multiply
   436.43x = 661.92 × 661.92
4. Step 4: Simplify right side
   436.43x = 438,140.57
5. Step 5: Solve for x
   x = 438,140.57/436.43
6. Step 6: Final answer
   x = 1,003.92