Finding the Third Proportional to 441,436 and 683,390

Step by Step Solution

1. Step 1: Write the proportion equation
   441,436 : 683,390 = 683,390 : x
2. Step 2: Convert to fraction form
   441,436/683,390 = 683,390/x
3. Step 3: Cross multiply
   441,436x = 683,390 × 683,390
4. Step 4: Simplify right side
   441,436x = 467,021,892,100
5. Step 5: Solve for x
   x = 467,021,892,100/441,436
6. Step 6: Final answer
   x = 1,057,960.59