Finding the Third Proportional to 111,304 and 262,478

Step by Step Solution

1. Step 1: Write the proportion equation
   111,304 : 262,478 = 262,478 : x
2. Step 2: Convert to fraction form
   111,304/262,478 = 262,478/x
3. Step 3: Cross multiply
   111,304x = 262,478 × 262,478
4. Step 4: Simplify right side
   111,304x = 68,894,700,484
5. Step 5: Solve for x
   x = 68,894,700,484/111,304
6. Step 6: Final answer
   x = 618,977.76