Finding the Third Proportional to 3,558,874 and 8,397,634

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558,874 : 8,397,634 = 8,397,634 : x
2. Step 2: Convert to fraction form
   3,558,874/8,397,634 = 8,397,634/x
3. Step 3: Cross multiply
   3,558,874x = 8,397,634 × 8,397,634
4. Step 4: Simplify right side
   3,558,874x = 70,520,256,797,956
5. Step 5: Solve for x
   x = 70,520,256,797,956/3,558,874
6. Step 6: Final answer
   x = 19,815,328.33