Final answer:
An approver can find an escalation approval request within the organization's approval workflow system or process management software, through notifications, or in their review queue.
Step-by-step explanation:
Where an approver can find an escalation approval request depends on the specific workflow and systems used by the organization. However, generally, such requests are usually found within the company's approval workflow system or business process management software. Here, an approver would typically receive a notification or locate the request in their designated queue or dashboard to review the escalated item. Additionally, if the process is manual, the escalation may come through a direct communication, such as an email or a physical memorandum that indicates a higher authority's review is needed.