Finding the Third Proportional to 450,586.50 and 697,449

Step by Step Solution

1. Step 1: Write the proportion equation
   450,586.50 : 697,449 = 697,449 : x
2. Step 2: Convert to fraction form
   450,586.50/697,449 = 697,449/x
3. Step 3: Cross multiply
   450,586.50x = 697,449 × 697,449
4. Step 4: Simplify right side
   450,586.50x = 486,435,107,601
5. Step 5: Solve for x
   x = 486,435,107,601/450,586.50
6. Step 6: Final answer
   x = 1,079,559.88