Finding the Third Proportional to 441,216 and 621,322.50

Step by Step Solution

1. Step 1: Write the proportion equation
   441,216 : 621,322.50 = 621,322.50 : x
2. Step 2: Convert to fraction form
   441,216/621,322.50 = 621,322.50/x
3. Step 3: Cross multiply
   441,216x = 621,322.50 × 621,322.50
4. Step 4: Simplify right side
   441,216x = 386,041,649,006.25
5. Step 5: Solve for x
   x = 386,041,649,006.25/441,216
6. Step 6: Final answer
   x = 874,949.34