Finding the Third Proportional to 1,638,911 and 3,576,694

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,911 : 3,576,694 = 3,576,694 : x
2. Step 2: Convert to fraction form
   1,638,911/3,576,694 = 3,576,694/x
3. Step 3: Cross multiply
   1,638,911x = 3,576,694 × 3,576,694
4. Step 4: Simplify right side
   1,638,911x = 12,792,739,969,636
5. Step 5: Solve for x
   x = 12,792,739,969,636/1,638,911
6. Step 6: Final answer
   x = 7,805,634.33