change minimum and maximum on logarithmic scale chart in excel

Hello All,
I using a logarithmic scale for an excel chart. The chart axis is not
"taking" the changes I am putting in for maximum and minimum. Always
resets to "100,000" and "10,000,000". The data points in the chart are
between 1,500,000 and 2,500,000. Thus the majority of the chart plot
space is "wasted". I would like to reset the maximum to 2,500,000 and
the minimum to 1,000,000 and still have it presented on logarithmic
scale.

Any help or work arounds would be greatly appreciated.

Thanks,

JB