Finding the Third Proportional to 315,523.50 and 675,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,523.50 : 675,379.50 = 675,379.50 : x
2. Step 2: Convert to fraction form
   315,523.50/675,379.50 = 675,379.50/x
3. Step 3: Cross multiply
   315,523.50x = 675,379.50 × 675,379.50
4. Step 4: Simplify right side
   315,523.50x = 456,137,469,020.25
5. Step 5: Solve for x
   x = 456,137,469,020.25/315,523.50
6. Step 6: Final answer
   x = 1,445,652.92