Finding the Third Proportional to 1,085,556 and 2,315,391

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085,556 : 2,315,391 = 2,315,391 : x
2. Step 2: Convert to fraction form
   1,085,556/2,315,391 = 2,315,391/x
3. Step 3: Cross multiply
   1,085,556x = 2,315,391 × 2,315,391
4. Step 4: Simplify right side
   1,085,556x = 5,361,035,482,881
5. Step 5: Solve for x
   x = 5,361,035,482,881/1,085,556
6. Step 6: Final answer
   x = 4,938,515.82