Finding the Third Proportional to 1,618,401 and 3,541,578

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618,401 : 3,541,578 = 3,541,578 : x
2. Step 2: Convert to fraction form
   1,618,401/3,541,578 = 3,541,578/x
3. Step 3: Cross multiply
   1,618,401x = 3,541,578 × 3,541,578
4. Step 4: Simplify right side
   1,618,401x = 12,542,774,730,084
5. Step 5: Solve for x
   x = 12,542,774,730,084/1,618,401
6. Step 6: Final answer
   x = 7,750,103.18