Finding the Third Proportional to 441,288 and 661,339.69

Step by Step Solution

1. Step 1: Write the proportion equation
   441,288 : 661,339.69 = 661,339.69 : x
2. Step 2: Convert to fraction form
   441,288/661,339.69 = 661,339.69/x
3. Step 3: Cross multiply
   441,288x = 661,339.69 × 661,339.69
4. Step 4: Simplify right side
   441,288x = 437,370,182,262.60
5. Step 5: Solve for x
   x = 437,370,182,262.60/441,288
6. Step 6: Final answer
   x = 991,121.86