Finding the Third Proportional to 1,278,711 and 1,909,314

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,711 : 1,909,314 = 1,909,314 : x
2. Step 2: Convert to fraction form
   1,278,711/1,909,314 = 1,909,314/x
3. Step 3: Cross multiply
   1,278,711x = 1,909,314 × 1,909,314
4. Step 4: Simplify right side
   1,278,711x = 3,645,479,950,596
5. Step 5: Solve for x
   x = 3,645,479,950,596/1,278,711
6. Step 6: Final answer
   x = 2,850,902.16