Finding the Third Proportional to 315,046.13 and 479,142

Step by Step Solution

1. Step 1: Write the proportion equation
   315,046.13 : 479,142 = 479,142 : x
2. Step 2: Convert to fraction form
   315,046.13/479,142 = 479,142/x
3. Step 3: Cross multiply
   315,046.13x = 479,142 × 479,142
4. Step 4: Simplify right side
   315,046.13x = 229,577,056,164
5. Step 5: Solve for x
   x = 229,577,056,164/315,046.13
6. Step 6: Final answer
   x = 728,709.35