Power of Attorney for Ilan Hart

This filing details a Power of Attorney granted by Ilan Hart, Chief Financial Officer of Churchill Capital Corp X/Cayman (trading symbol: INFQ), to Matthew Kinsella and Jason Hall of Infleqtion, Inc. The attorneys-in-fact are authorized to execute and file SEC Forms 3, 4, and 5, including amendments, on behalf of Mr. Hart. This is in accordance with Section 16(a) of the Securities Exchange Act of 1934. The Power of Attorney remains in effect until Mr. Hart is no longer required to file these forms, or until revoked. The document was signed on February 18, 2026.