Research in Motion’s shares jumped more than 11 percent after the Canadian company announced on Thursday its third fiscal quarter profit. BlackBerry’s manufacturer reported that its third fiscal quarter more than doubled compared to one year earlier.

So, for the quarter ended December 1, the company earned 65 cents a share, or $370.5 million, compared to 31 cents a share, or $175.2 million, in the same quarter in 2006. Thus, the company’s third quarter revenue rose to no less than $1.67 billion, from only $835.1 million in 2006.

Interestingly enough, Thomson Financial’s analysts estimated quite precisely Research in Motion’s achievement for this period; they expected earnings of 62 cents a share and total revenue of $1.65 billion.

The Canadian manufacturer was so successful because of a strong demand for its BlackBerry smart mobile phones; the company shipped more than 3.9 million handsets and added about 1.65 million new BlackBerry subscriber accounts during this period.

So, with such financial achievements, Research in Motion’s future plans are optimistic. The company expects earnings of 66 cents to 70 cents per share in its fourth fiscal quarter and total revenue of $1.8 billion to $1.87 billion.