Finding the Third Proportional to 1,289,146 and 2,809,384

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,146 : 2,809,384 = 2,809,384 : x
2. Step 2: Convert to fraction form
   1,289,146/2,809,384 = 2,809,384/x
3. Step 3: Cross multiply
   1,289,146x = 2,809,384 × 2,809,384
4. Step 4: Simplify right side
   1,289,146x = 7,892,638,459,456
5. Step 5: Solve for x
   x = 7,892,638,459,456/1,289,146
6. Step 6: Final answer
   x = 6,122,377.50