Finding the Third Proportional to 1,288,831 and 1,893,783

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,831 : 1,893,783 = 1,893,783 : x
2. Step 2: Convert to fraction form
   1,288,831/1,893,783 = 1,893,783/x
3. Step 3: Cross multiply
   1,288,831x = 1,893,783 × 1,893,783
4. Step 4: Simplify right side
   1,288,831x = 3,586,414,051,089
5. Step 5: Solve for x
   x = 3,586,414,051,089/1,288,831
6. Step 6: Final answer
   x = 2,782,687.61