Finding the Third Proportional to 1,800,682 and 3,900,308

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800,682 : 3,900,308 = 3,900,308 : x
2. Step 2: Convert to fraction form
   1,800,682/3,900,308 = 3,900,308/x
3. Step 3: Cross multiply
   1,800,682x = 3,900,308 × 3,900,308
4. Step 4: Simplify right side
   1,800,682x = 15,212,402,494,864
5. Step 5: Solve for x
   x = 15,212,402,494,864/1,800,682
6. Step 6: Final answer
   x = 8,448,133.82