Greek cement firm Titan is expected to report a 6 per cent rise in third-quarter net profit this week, boosted by its US operations and a rebound in the domestic market, analysts said on Tuesday.   Ten analysts polled by Reuters on average forecast a net profit of Euro 64.8m with nine-month net profit seen up 3.6 per cent to Euro 142.9m "The main growth catalyst should be once again the US where pricing and volume fundamentals in Florida remain veyy positive," Citigroup said in a preview.   Analysts said price increases and a modest rebound in sales volume in the domestic market are also expected to help.   Published under Cement News