Finding the Third Proportional to 123,281 and 262,449

Step by Step Solution

1. Step 1: Write the proportion equation
   123,281 : 262,449 = 262,449 : x
2. Step 2: Convert to fraction form
   123,281/262,449 = 262,449/x
3. Step 3: Cross multiply
   123,281x = 262,449 × 262,449
4. Step 4: Simplify right side
   123,281x = 68,879,477,601
5. Step 5: Solve for x
   x = 68,879,477,601/123,281
6. Step 6: Final answer
   x = 558,719.33