Finding the Third Proportional to 441,660 and 685,150

Step by Step Solution

1. Step 1: Write the proportion equation
   441,660 : 685,150 = 685,150 : x
2. Step 2: Convert to fraction form
   441,660/685,150 = 685,150/x
3. Step 3: Cross multiply
   441,660x = 685,150 × 685,150
4. Step 4: Simplify right side
   441,660x = 469,430,522,500
5. Step 5: Solve for x
   x = 469,430,522,500/441,660
6. Step 6: Final answer
   x = 1,062,877.60