Finding the Third Proportional to 1,800,112 and 3,915,872

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800,112 : 3,915,872 = 3,915,872 : x
2. Step 2: Convert to fraction form
   1,800,112/3,915,872 = 3,915,872/x
3. Step 3: Cross multiply
   1,800,112x = 3,915,872 × 3,915,872
4. Step 4: Simplify right side
   1,800,112x = 15,334,053,520,384
5. Step 5: Solve for x
   x = 15,334,053,520,384/1,800,112
6. Step 6: Final answer
   x = 8,518,388.59