Finding the Third Proportional to 2,585,628 and 5,245,128

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585,628 : 5,245,128 = 5,245,128 : x
2. Step 2: Convert to fraction form
   2,585,628/5,245,128 = 5,245,128/x
3. Step 3: Cross multiply
   2,585,628x = 5,245,128 × 5,245,128
4. Step 4: Simplify right side
   2,585,628x = 27,511,367,736,384
5. Step 5: Solve for x
   x = 27,511,367,736,384/2,585,628
6. Step 6: Final answer
   x = 10,640,110.54