One million invested in property daughter reckoned (9)
I believe the answer is:
estimated
'reckoned' is the definition.
('estimate' can be a synonym of 'reckon')
'one million invested in property daughter' is the wordplay.
'one million' becomes 'im' (resembles em).
'invested in' indicates putting letters inside.
'property' becomes 'estate' (estate is a kind of property).
'daughter' becomes 'd' (genealogical abbreviation).
'im' put into 'estate' is 'estimate'.
'estimate'+'d'='ESTIMATED'
(Other definitions for estimated that I've seen before include "Worked out" , "Calculated approximately" , "Guessed" , "Judged roughly" , "Approximated, reckoned" .)