Try this.
CSS
.imageContainer {
float: left;
}
p {
text-align: center;
}
HTML
<div class="image123">
<div class="imageContainer">
<img src="/images/tv.gif" height="200" width="200" />
<p>This is image 1</p>
</div>
<div class="imageContainer">
<img class="middle-img" src="/images/tv.gif"/ height="200" width="200" />
<p>This is image 2</p>
</div>
<div class="imageContainer">
<img src="/images/tv.gif"/ height="200" width="200"/>
<p>This is image 3</p>
</div>
</div>