Finding the Third Proportional to 613,678 and 1,269,960

Step by Step Solution

1. Step 1: Write the proportion equation
   613,678 : 1,269,960 = 1,269,960 : x
2. Step 2: Convert to fraction form
   613,678/1,269,960 = 1,269,960/x
3. Step 3: Cross multiply
   613,678x = 1,269,960 × 1,269,960
4. Step 4: Simplify right side
   613,678x = 1,612,798,401,600
5. Step 5: Solve for x
   x = 1,612,798,401,600/613,678
6. Step 6: Final answer
   x = 2,628,085.74