Finding the Third Proportional to 435,364 and 672,456

Step by Step Solution

1. Step 1: Write the proportion equation
   435,364 : 672,456 = 672,456 : x
2. Step 2: Convert to fraction form
   435,364/672,456 = 672,456/x
3. Step 3: Cross multiply
   435,364x = 672,456 × 672,456
4. Step 4: Simplify right side
   435,364x = 452,197,071,936
5. Step 5: Solve for x
   x = 452,197,071,936/435,364
6. Step 6: Final answer
   x = 1,038,664.36