Finding the Third Proportional to 4,278,708 and 9,397,116

Step by Step Solution

1. Step 1: Write the proportion equation
   4,278,708 : 9,397,116 = 9,397,116 : x
2. Step 2: Convert to fraction form
   4,278,708/9,397,116 = 9,397,116/x
3. Step 3: Cross multiply
   4,278,708x = 9,397,116 × 9,397,116
4. Step 4: Simplify right side
   4,278,708x = 88,305,789,117,456
5. Step 5: Solve for x
   x = 88,305,789,117,456/4,278,708
6. Step 6: Final answer
   x = 20,638,423.82