If i have a number of bp in chromosome 1 for example(298,295,559 bp) can I use this number to find the number of bp in chromosome 3.
Chromosomes vary in length and there is no reason to expect a nice relationship in the relative length of chromosomes.
However, by definition chromosomes are numbered from the longest to the shortest (except for the concern of sexual chromosomes). The chromosome 1 is the longest, the chromosome 2 the second longest and the chromosome 8 is the 8th longest. Following @ping comment
Also note that human chromosomes 21 and 22 are numbered the "wrong" way round in that 21 is actually smaller than 22; so even for autosomes using the numbering to determine size rankings doesn't necessarily work.
In consequence, if you know that the chromosome 1 is x bp (base pairs) long, then the only thing you can tell about chromosome 3 is that is has less than x base pairs. Note that x ≈ 250,000,000 base pairs in human.