Answer:
1. Prepare the journal entries on October 1, 2015, to record the issuance of the note.
Journal entry for Precision Castparts
Dr Cash 40,600,000
Cr Notes payable 40,600,000
Journal entry for Midwest Bank
Dr Notes receivable 40,600,000
Cr Cash 40,600,000
2. Record the adjustment on December 31, 2015.
Journal entry for Precision Castparts
Dr Interest expense 812,000
Cr Interest payable 812,000
Journal entry for Midwest Bank
Dr Interest receivable 812,000
Cr Interest revenue 812,000
3. Prepare the journal entry on September 30, 2016, to record payment of the notes payable at maturity
Journal entry for Precision Castparts
Dr Notes payable 40,600,000
Dr Interest expense 2,436,000
Dr Interest payable 812,000
Cr Cash 43,848,000
Journal entry for Midwest Bank
Dr Cash 43,848,000
Cr Notes receivable 40,600,000
Cr Interest receivable 812,000
Cr Interest revenue 2,436,000