Finding the Third Proportional to 1,296,783 and 1,867,809

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296,783 : 1,867,809 = 1,867,809 : x
2. Step 2: Convert to fraction form
   1,296,783/1,867,809 = 1,867,809/x
3. Step 3: Cross multiply
   1,296,783x = 1,867,809 × 1,867,809
4. Step 4: Simplify right side
   1,296,783x = 3,488,710,460,481
5. Step 5: Solve for x
   x = 3,488,710,460,481/1,296,783
6. Step 6: Final answer
   x = 2,690,280.84