Finding the Third Proportional to 315,048.38 and 479,145.38

Step by Step Solution

1. Step 1: Write the proportion equation
   315,048.38 : 479,145.38 = 479,145.38 : x
2. Step 2: Convert to fraction form
   315,048.38/479,145.38 = 479,145.38/x
3. Step 3: Cross multiply
   315,048.38x = 479,145.38 × 479,145.38
4. Step 4: Simplify right side
   315,048.38x = 229,580,290,383.89
5. Step 5: Solve for x
   x = 229,580,290,383.89/315,048.38
6. Step 6: Final answer
   x = 728,714.41