final spike
...that on average, laying the track leading up to the final spike of the Grand Trunk Pacific Railway cost $112,000 a mile?
...that on average, laying the <a class="mw-redirect" href="./Rail_tracks" id="mwB98" rel="mw:WikiLink" title="Rail tracks">track</a> leading up to the <b id="mwB-A"><a href="./Last_Spike_(Grand_Trunk_Pacific_Railway)" id="mwB-E" rel="mw:WikiLink" title="Last Spike (Grand Trunk Pacific Railway)">final spike</a></b> of the <a href="./Grand_Trunk_Pacific_Railway" id="mwB-I" rel="mw:WikiLink" title="Grand Trunk Pacific Railway">Grand Trunk Pacific Railway</a> cost <a class="mw-redirect" href="./USD" id="mwB-M" rel="mw:WikiLink" title="USD">$</a>112,000 a mile?