Finding the Third Proportional to 630,624 and 1,401,216

Step by Step Solution

1. Step 1: Write the proportion equation
   630,624 : 1,401,216 = 1,401,216 : x
2. Step 2: Convert to fraction form
   630,624/1,401,216 = 1,401,216/x
3. Step 3: Cross multiply
   630,624x = 1,401,216 × 1,401,216
4. Step 4: Simplify right side
   630,624x = 1,963,406,278,656
5. Step 5: Solve for x
   x = 1,963,406,278,656/630,624
6. Step 6: Final answer
   x = 3,113,434.12