Finding the Third Proportional to 1,836,636 and 3,998,556

Step by Step Solution

1. Step 1: Write the proportion equation
   1,836,636 : 3,998,556 = 3,998,556 : x
2. Step 2: Convert to fraction form
   1,836,636/3,998,556 = 3,998,556/x
3. Step 3: Cross multiply
   1,836,636x = 3,998,556 × 3,998,556
4. Step 4: Simplify right side
   1,836,636x = 15,988,450,085,136
5. Step 5: Solve for x
   x = 15,988,450,085,136/1,836,636
6. Step 6: Final answer
   x = 8,705,290.59