Finding the Third Proportional to 4,258,856 and 9,288,452

Step by Step Solution

1. Step 1: Write the proportion equation
   4,258,856 : 9,288,452 = 9,288,452 : x
2. Step 2: Convert to fraction form
   4,258,856/9,288,452 = 9,288,452/x
3. Step 3: Cross multiply
   4,258,856x = 9,288,452 × 9,288,452
4. Step 4: Simplify right side
   4,258,856x = 86,275,340,556,304
5. Step 5: Solve for x
   x = 86,275,340,556,304/4,258,856
6. Step 6: Final answer
   x = 20,257,867.50