The phrase "the third in line" is correct and usable in written English.
You can use it in any context in which you are referring to something or someone as the third item in a list or sequence. For example, "The third in line was given a medal for their bravery."
Márquez, the third in line, calmly took the ball down and beat Khune.
She was the third in line of us five kids; I was the fourth.
He will be the third in line to ascend to the throne.
The third in line to the throne is a little late to the Hamilton party, too.
War is inevitable, shrugged the third in line, it's part of human nature; they haven't had one for a while.
But TV and newspapers breathlessly anticipated an announcement that the third in line to the throne had finally arrived.
Bolt, 25, immediately called for a rematch against the third-in-line to the throne who side-stepped the issue.
Twelve months after his arrival sparked a Twitter meltdown and rendered the panicked assault on primogeniture a little premature, Prince George mania is thriving once again as the third-in-line celebrates his first birthday on Tuesday.
LONDON — As British newspapers continued to harrumph about Prince Harry's naked antics in Las Vegas, the scandal surrounding the third-in-line to the throne appeared to have done little to chill their readers' enthusiasm for visiting Sin City.
Parents of newborns who share their birthday with the third-in-line to the throne need to apply online for one of the 2,013 coins that have been struck by visiting Facebook.com/theroyalmint.com/theroyalmint
Setchell, who delayed his retirement when the Duke and Duchess of Cambridge asked him to supervise the birth of the third-in-line to the throne, is made a Knight Commander of the Royal Victorian Orders (KCVO) – an honour given as the personal gift of the Queen.
