Your statement is not a prediction of certainty, but it is mathematically correct under those assumptions.

Suppose Bitcoin is around $87,000 today:

If Bitcoin reaches $500,000 by 2030, its price would be about 5.75× higher, so $1 invested today would become about $5.75.

If Bitcoin reaches $1,000,000, that's about 11.5× higher, so $1 would become about $11.50.

However, the actual outcome depends entirely on Bitcoin's future price. Here are a few examples:

Bitcoin Price in 2030 Value of $1 Invested Today*

$250,000 ~$2.90
$500,000 ~$5.75
$750,000 ~$8.60
$1,000,000 ~$11.50
$2,000,000 ~$23.00

*Assuming a current Bitcoin price near $87,000 and ignoring fees and taxes.

No one knows where Bitcoin will trade in 2030. Estimates from analysts range from below current prices to well above $1 million, so the "$5.75–$11.50" range should be viewed as a scenario based on bullish assumptions, not a guaranteed return.