Finding the Third Proportional to 1,822,239 and 3,987,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,239 : 3,987,666 = 3,987,666 : x
2. Step 2: Convert to fraction form
   1,822,239/3,987,666 = 3,987,666/x
3. Step 3: Cross multiply
   1,822,239x = 3,987,666 × 3,987,666
4. Step 4: Simplify right side
   1,822,239x = 15,901,480,127,556
5. Step 5: Solve for x
   x = 15,901,480,127,556/1,822,239
6. Step 6: Final answer
   x = 8,726,341.68