Finding the Third Proportional to 1,211,718 and 2,548,788

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211,718 : 2,548,788 = 2,548,788 : x
2. Step 2: Convert to fraction form
   1,211,718/2,548,788 = 2,548,788/x
3. Step 3: Cross multiply
   1,211,718x = 2,548,788 × 2,548,788
4. Step 4: Simplify right side
   1,211,718x = 6,496,320,268,944
5. Step 5: Solve for x
   x = 6,496,320,268,944/1,211,718
6. Step 6: Final answer
   x = 5,361,247.64