Finding the Third Proportional to 441,207 and 621,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   441,207 : 621,310.50 = 621,310.50 : x
2. Step 2: Convert to fraction form
   441,207/621,310.50 = 621,310.50/x
3. Step 3: Cross multiply
   441,207x = 621,310.50 × 621,310.50
4. Step 4: Simplify right side
   441,207x = 386,026,737,410.25
5. Step 5: Solve for x
   x = 386,026,737,410.25/441,207
6. Step 6: Final answer
   x = 874,933.39