Finding the Third Proportional to 1,860,289 and 3,986,298

Step by Step Solution

1. Step 1: Write the proportion equation
   1,860,289 : 3,986,298 = 3,986,298 : x
2. Step 2: Convert to fraction form
   1,860,289/3,986,298 = 3,986,298/x
3. Step 3: Cross multiply
   1,860,289x = 3,986,298 × 3,986,298
4. Step 4: Simplify right side
   1,860,289x = 15,890,571,744,804
5. Step 5: Solve for x
   x = 15,890,571,744,804/1,860,289
6. Step 6: Final answer
   x = 8,541,990.92