Finding the Third Proportional to 443,453 and 684,861

Step by Step Solution

1. Step 1: Write the proportion equation
   443,453 : 684,861 = 684,861 : x
2. Step 2: Convert to fraction form
   443,453/684,861 = 684,861/x
3. Step 3: Cross multiply
   443,453x = 684,861 × 684,861
4. Step 4: Simplify right side
   443,453x = 469,034,589,321
5. Step 5: Solve for x
   x = 469,034,589,321/443,453
6. Step 6: Final answer
   x = 1,057,687.26