Finding the Third Proportional to 3,864,216 and 8,474,924

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864,216 : 8,474,924 = 8,474,924 : x
2. Step 2: Convert to fraction form
   3,864,216/8,474,924 = 8,474,924/x
3. Step 3: Cross multiply
   3,864,216x = 8,474,924 × 8,474,924
4. Step 4: Simplify right side
   3,864,216x = 71,824,336,805,776
5. Step 5: Solve for x
   x = 71,824,336,805,776/3,864,216
6. Step 6: Final answer
   x = 18,587,039.86