Finding the Third Proportional to 435,716 and 672,996

Step by Step Solution

1. Step 1: Write the proportion equation
   435,716 : 672,996 = 672,996 : x
2. Step 2: Convert to fraction form
   435,716/672,996 = 672,996/x
3. Step 3: Cross multiply
   435,716x = 672,996 × 672,996
4. Step 4: Simplify right side
   435,716x = 452,923,616,016
5. Step 5: Solve for x
   x = 452,923,616,016/435,716
6. Step 6: Final answer
   x = 1,039,492.73