Finding the Third Proportional to 484.88 and 743.72

Step by Step Solution

1. Step 1: Write the proportion equation
   484.88 : 743.72 = 743.72 : x
2. Step 2: Convert to fraction form
   484.88/743.72 = 743.72/x
3. Step 3: Cross multiply
   484.88x = 743.72 × 743.72
4. Step 4: Simplify right side
   484.88x = 553,117.58
5. Step 5: Solve for x
   x = 553,117.58/484.88
6. Step 6: Final answer
   x = 1,140.74