Finding the Third Proportional to 1,800,336 and 3,909,760

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800,336 : 3,909,760 = 3,909,760 : x
2. Step 2: Convert to fraction form
   1,800,336/3,909,760 = 3,909,760/x
3. Step 3: Cross multiply
   1,800,336x = 3,909,760 × 3,909,760
4. Step 4: Simplify right side
   1,800,336x = 15,286,223,257,600
5. Step 5: Solve for x
   x = 15,286,223,257,600/1,800,336
6. Step 6: Final answer
   x = 8,490,761.31