Finding the Third Proportional to 623,007 and 818,055

Step by Step Solution

1. Step 1: Write the proportion equation
   623,007 : 818,055 = 818,055 : x
2. Step 2: Convert to fraction form
   623,007/818,055 = 818,055/x
3. Step 3: Cross multiply
   623,007x = 818,055 × 818,055
4. Step 4: Simplify right side
   623,007x = 669,213,983,025
5. Step 5: Solve for x
   x = 669,213,983,025/623,007
6. Step 6: Final answer
   x = 1,074,167.68