Finding the Third Proportional to 441,056 and 621,116

Step by Step Solution

1. Step 1: Write the proportion equation
   441,056 : 621,116 = 621,116 : x
2. Step 2: Convert to fraction form
   441,056/621,116 = 621,116/x
3. Step 3: Cross multiply
   441,056x = 621,116 × 621,116
4. Step 4: Simplify right side
   441,056x = 385,785,085,456
5. Step 5: Solve for x
   x = 385,785,085,456/441,056
6. Step 6: Final answer
   x = 874,685.04