A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
The structured reference only works within the existing table - you could add a column of formulas to your table like
=[@[Dec-23 Pi Sell]]*Sheet2!DX187
That syntax basically means use the value from the same row in the field "Dec-23 Pi Sell" to perform the calculation, and really doesn't have meaning outside the table.
For external references to the table with formulas off sheet, you should use the cell address style.