Finding the Third Proportional to 311,658.47 and 682,432.59

Step by Step Solution

1. Step 1: Write the proportion equation
   311,658.47 : 682,432.59 = 682,432.59 : x
2. Step 2: Convert to fraction form
   311,658.47/682,432.59 = 682,432.59/x
3. Step 3: Cross multiply
   311,658.47x = 682,432.59 × 682,432.59
4. Step 4: Simplify right side
   311,658.47x = 465,714,245,012.35
5. Step 5: Solve for x
   x = 465,714,245,012.35/311,658.47
6. Step 6: Final answer
   x = 1,494,309.61