Finding the Third Proportional to 623,667 and 1,321,494

Step by Step Solution

1. Step 1: Write the proportion equation
   623,667 : 1,321,494 = 1,321,494 : x
2. Step 2: Convert to fraction form
   623,667/1,321,494 = 1,321,494/x
3. Step 3: Cross multiply
   623,667x = 1,321,494 × 1,321,494
4. Step 4: Simplify right side
   623,667x = 1,746,346,392,036
5. Step 5: Solve for x
   x = 1,746,346,392,036/623,667
6. Step 6: Final answer
   x = 2,800,126.34