Finding the Third Proportional to 1,216,636 and 2,647,326

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,636 : 2,647,326 = 2,647,326 : x
2. Step 2: Convert to fraction form
   1,216,636/2,647,326 = 2,647,326/x
3. Step 3: Cross multiply
   1,216,636x = 2,647,326 × 2,647,326
4. Step 4: Simplify right side
   1,216,636x = 7,008,334,950,276
5. Step 5: Solve for x
   x = 7,008,334,950,276/1,216,636
6. Step 6: Final answer
   x = 5,760,420.50