Finding the Third Proportional to 1,809,757 and 3,978,161

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809,757 : 3,978,161 = 3,978,161 : x
2. Step 2: Convert to fraction form
   1,809,757/3,978,161 = 3,978,161/x
3. Step 3: Cross multiply
   1,809,757x = 3,978,161 × 3,978,161
4. Step 4: Simplify right side
   1,809,757x = 15,825,764,941,921
5. Step 5: Solve for x
   x = 15,825,764,941,921/1,809,757
6. Step 6: Final answer
   x = 8,744,690.55