Problem Storing Latitude and Longitude values in MySQL database

I want to store the values of latitude and longitude fetched from Google Maps GeoCoding API in a MySQL database. The values are in float format.

12.9274529

77.5905970

And when I want to store it in database (which is datatype float) it rounds up float and store it in following format:

12.9275

77.5906

Am I using the wrong datatype? If yes then what datatype should I be using to store latitude and longitude values?

Update :

here is the CREATE TABLE as requestted by Allin

CREATE TABLE `properties` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(100) NOT NULL,
  `description` text,
  `latitude` float DEFAULT NULL,
  `longitude` float DEFAULT NULL,
  `landmark` varchar(50) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `serial` (`serial`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=3 ;