How Populate a third dropdown value based on two prior selected dropdown options

Supriya25
Tera Guru

Hi Team,

How Populate a third dropdown value based on two prior selected dropdown options??

 

Dropdown 1 has 30+ values

Dropdown 2 has 15+ values

Dropdown 3 has 4 values

based on Dropdown 1 and 2 values selection Dropdown 3 field should be auto-populated .

How can achieve it in best practice way.???

 

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