Ronald writes a letter each on fifteen tags and hands seven each to two girls. Each girl re-arranges the seven tags such as to frame a valid word of seven characters.
Ronald takes the word proposed by first girl and places the fifteenth tag at the end of it and voilà a legit word of eight.
Same does happen when he places the fifteenth tag at the beginning of the second girl's word.
And much to their wonder, when Ronald places this letter between the two words, the word of fifteen letters, thus formed, is equally valid in english language.
One of the characters that second girl has, is a 'G'. For you to determine, is the final word of fifteen.