Organize figures in two columns and one above the other

Question

I would like to organize 3 figures as it's shown in the figure below:

Can anyone help?

Answer 1

Something like this? (The [b] position specifiers are needed to bottom-align subfigures b and c.)

\documentclass[demo]{report} % omit 'demo' option in real document
\usepackage{graphicx,subcaption}
\begin{document}
\setcounter{chapter}{1} % just for this example

\begin{figure}
\begin{minipage}[b]{0.45\textwidth}
\begin{subfigure}[b]{\linewidth}
\includegraphics[width=\linewidth]{a}
\caption{Caption A}
\end{subfigure}

\vspace*{5mm} % vertical whitespace
\begin{subfigure}[b]{\linewidth}
\includegraphics[width=\linewidth]{b}
\caption{Caption B}
\end{subfigure}
\end{minipage}
\hfill        % horizontal whitespace
\begin{subfigure}[b]{0.45\textwidth}
\includegraphics[width=\linewidth,height=1.5\linewidth]{c}
\caption{Caption C}
\end{subfigure}

\caption{Caption Bla}
\end{figure}
\end{document}