Finding the Third Proportional to 3,986,404 and 8,238,546

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986,404 : 8,238,546 = 8,238,546 : x
2. Step 2: Convert to fraction form
   3,986,404/8,238,546 = 8,238,546/x
3. Step 3: Cross multiply
   3,986,404x = 8,238,546 × 8,238,546
4. Step 4: Simplify right side
   3,986,404x = 67,873,640,194,116
5. Step 5: Solve for x
   x = 67,873,640,194,116/3,986,404
6. Step 6: Final answer
   x = 17,026,282.38