1. Move the decimal point: Start with the decimal point assumed at the end of the number (105000.). Move the decimal point to the left until you have a number between 1 and 10. In this case, you'd move it five places to the left, resulting in 1.05.

2. Count the moves: You moved the decimal point five places to the left.

3. Express the result: The scientific notation is the number you obtained (1.05) multiplied by 10 raised to the power of the number of places you moved the decimal (5).

Therefore, 105,000 in scientific notation is 1.05 x 10⁵.