Finding the Third Proportional to 4,258,959 and 9,288,684

Step by Step Solution

1. Step 1: Write the proportion equation
   4,258,959 : 9,288,684 = 9,288,684 : x
2. Step 2: Convert to fraction form
   4,258,959/9,288,684 = 9,288,684/x
3. Step 3: Cross multiply
   4,258,959x = 9,288,684 × 9,288,684
4. Step 4: Simplify right side
   4,258,959x = 86,279,650,451,856
5. Step 5: Solve for x
   x = 86,279,650,451,856/4,258,959
6. Step 6: Final answer
   x = 20,258,389.54