I have to find the second instance from the right in strings with a variable
number of segments delimited by ".", where the final string is reliably 6
characters and the remaining segments are of variable length.

Example string:
mypage.My_Details.Yorkshire_and_Humber_region_page .Accountants_shown_ways_of_going_for_Olympic_gold_ .136277

From which I want to extract:
Accountants_shown_ways_of_going_for_Olympic_gold_. 136277