Cosh[0.4316379949 x-0.3359650809 Sin[0.9146398481x]]-3.031628975*10^-11 Sinh[0.9557645571 x]
The 44th M.P. seems to be 4.5491129*10^7 probably somewhere from,
4.5614414*10^7 to 4.5367844*10^7