Finding the Third Proportional to 3,864,196 and 8,474,888

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864,196 : 8,474,888 = 8,474,888 : x
2. Step 2: Convert to fraction form
   3,864,196/8,474,888 = 8,474,888/x
3. Step 3: Cross multiply
   3,864,196x = 8,474,888 × 8,474,888
4. Step 4: Simplify right side
   3,864,196x = 71,823,726,612,544
5. Step 5: Solve for x
   x = 71,823,726,612,544/3,864,196
6. Step 6: Final answer
   x = 18,586,978.15