Finding the Third Proportional to 1,278,704 and 1,909,303

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,704 : 1,909,303 = 1,909,303 : x
2. Step 2: Convert to fraction form
   1,278,704/1,909,303 = 1,909,303/x
3. Step 3: Cross multiply
   1,278,704x = 1,909,303 × 1,909,303
4. Step 4: Simplify right side
   1,278,704x = 3,645,437,945,809
5. Step 5: Solve for x
   x = 3,645,437,945,809/1,278,704
6. Step 6: Final answer
   x = 2,850,884.92