Finding the Third Proportional to 1,863,438 and 3,992,600

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863,438 : 3,992,600 = 3,992,600 : x
2. Step 2: Convert to fraction form
   1,863,438/3,992,600 = 3,992,600/x
3. Step 3: Cross multiply
   1,863,438x = 3,992,600 × 3,992,600
4. Step 4: Simplify right side
   1,863,438x = 15,940,854,760,000
5. Step 5: Solve for x
   x = 15,940,854,760,000/1,863,438
6. Step 6: Final answer
   x = 8,554,539.92