Answer:
Taking the present value of a single cash flow into consideration. If the discount rate is increased then, the cash flow would also be increased especially if a constant present value is maintained.
By comparison; let's make an assumption that Cornell used a higher discount rate, then that means he would need to project a higher level of assumed future cash flows that is higher than the present value to have been consistent with the given pre announced price of $61.50.
So, the implied growth rate consistent with a price of $61.50 would have been higher than the 20 percent growth rate estimated by Cornell.