Finding the Third Proportional to 1,289,640 and 2,033,390

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,640 : 2,033,390 = 2,033,390 : x
2. Step 2: Convert to fraction form
   1,289,640/2,033,390 = 2,033,390/x
3. Step 3: Cross multiply
   1,289,640x = 2,033,390 × 2,033,390
4. Step 4: Simplify right side
   1,289,640x = 4,134,674,892,100
5. Step 5: Solve for x
   x = 4,134,674,892,100/1,289,640
6. Step 6: Final answer
   x = 3,206,069.05