Finding the Third Proportional to 1,189,828 and 1,787,379

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,828 : 1,787,379 = 1,787,379 : x
2. Step 2: Convert to fraction form
   1,189,828/1,787,379 = 1,787,379/x
3. Step 3: Cross multiply
   1,189,828x = 1,787,379 × 1,787,379
4. Step 4: Simplify right side
   1,189,828x = 3,194,723,689,641
5. Step 5: Solve for x
   x = 3,194,723,689,641/1,189,828
6. Step 6: Final answer
   x = 2,685,029.84