Finding the Third Proportional to 1,800,684 and 3,900,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800,684 : 3,900,312 = 3,900,312 : x
2. Step 2: Convert to fraction form
   1,800,684/3,900,312 = 3,900,312/x
3. Step 3: Cross multiply
   1,800,684x = 3,900,312 × 3,900,312
4. Step 4: Simplify right side
   1,800,684x = 15,212,433,697,344
5. Step 5: Solve for x
   x = 15,212,433,697,344/1,800,684
6. Step 6: Final answer
   x = 8,448,141.76