var geometryOption = new GeometryOptions
    {
        Geometeries = new[]
                      {
                          new Geometry {X = -117, Y = 34}
                      },
        GeometryType = GeometryTypes.Point
    };

var options = new ProjectOptions
    {
        InSpatialReference = new SpatialReference { WellKnownId = "4326" },
        OutSpatialReference = new SpatialReference { WellKnownId = "102113" },
        Geometries = geometryOption
    };

var svs = new GeometryService();
svs.Project(options);