Finding the Third Proportional to 1,289,136 and 2,809,362

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,136 : 2,809,362 = 2,809,362 : x
2. Step 2: Convert to fraction form
   1,289,136/2,809,362 = 2,809,362/x
3. Step 3: Cross multiply
   1,289,136x = 2,809,362 × 2,809,362
4. Step 4: Simplify right side
   1,289,136x = 7,892,514,847,044
5. Step 5: Solve for x
   x = 7,892,514,847,044/1,289,136
6. Step 6: Final answer
   x = 6,122,329.10