import os

def save_to_xlsx(project_name, file_name, data):
    """
    Save data to an Excel file.
    
    Args:
    project_name (str): Name of the project (used for folder name).
    file_name (str): Name of the file to save.
    data (pandas.DataFrame): Data to save.
    """
    os.makedirs(f'Result/{project_name}', exist_ok=True)
    file_path = f'Result/{project_name}/{file_name}.xlsx'
    data.to_excel(file_path, index=True)
    print(f"Data saved successfully to {file_path}")