Finding the Third Proportional to 242,354 and 518,404

Step by Step Solution

1. Step 1: Write the proportion equation
   242,354 : 518,404 = 518,404 : x
2. Step 2: Convert to fraction form
   242,354/518,404 = 518,404/x
3. Step 3: Cross multiply
   242,354x = 518,404 × 518,404
4. Step 4: Simplify right side
   242,354x = 268,742,707,216
5. Step 5: Solve for x
   x = 268,742,707,216/242,354
6. Step 6: Final answer
   x = 1,108,884.97