Finding the Third Proportional to 1,085,605 and 2,315,485

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085,605 : 2,315,485 = 2,315,485 : x
2. Step 2: Convert to fraction form
   1,085,605/2,315,485 = 2,315,485/x
3. Step 3: Cross multiply
   1,085,605x = 2,315,485 × 2,315,485
4. Step 4: Simplify right side
   1,085,605x = 5,361,470,785,225
5. Step 5: Solve for x
   x = 5,361,470,785,225/1,085,605
6. Step 6: Final answer
   x = 4,938,693.89