Finding the Third Proportional to 1,278,404 and 2,840,584

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,404 : 2,840,584 = 2,840,584 : x
2. Step 2: Convert to fraction form
   1,278,404/2,840,584 = 2,840,584/x
3. Step 3: Cross multiply
   1,278,404x = 2,840,584 × 2,840,584
4. Step 4: Simplify right side
   1,278,404x = 8,068,917,461,056
5. Step 5: Solve for x
   x = 8,068,917,461,056/1,278,404
6. Step 6: Final answer
   x = 6,311,711.68