Micron Technology Inc. beat earnings expectations as profit and revenue continued to grow quickly in a report issued Wednesday afternoon, but shares still declined slightly in after-hours trading. Micron reported third-quarter net income of $3.82 billion, or $3.10 a share, on sales of $7.8 billion, up from $5.57 billion in the year-ago quarter. After adjustments for stock-based compensation and other effects, the company claimed earnings of $3.15 a share, up from $1.62 a share a year ago. Analysts on average expected adjusted earnings of $3.13 cents a share on sales of $7.76 billion, according to FactSet. Shares fell about 2% in immediate late trading after numbers were released. Micron stock has been on a tear as memory prices have increased over the past couple years, rising 91.4% in the past year as the S&P 500 index has gained 13.4%.