Finding the Third Proportional to 443,651 and 681,938

Step by Step Solution

1. Step 1: Write the proportion equation
   443,651 : 681,938 = 681,938 : x
2. Step 2: Convert to fraction form
   443,651/681,938 = 681,938/x
3. Step 3: Cross multiply
   443,651x = 681,938 × 681,938
4. Step 4: Simplify right side
   443,651x = 465,039,435,844
5. Step 5: Solve for x
   x = 465,039,435,844/443,651
6. Step 6: Final answer
   x = 1,048,210.05