Finding the Third Proportional to 443,272 and 664,736

Step by Step Solution

1. Step 1: Write the proportion equation
   443,272 : 664,736 = 664,736 : x
2. Step 2: Convert to fraction form
   443,272/664,736 = 664,736/x
3. Step 3: Cross multiply
   443,272x = 664,736 × 664,736
4. Step 4: Simplify right side
   443,272x = 441,873,949,696
5. Step 5: Solve for x
   x = 441,873,949,696/443,272
6. Step 6: Final answer
   x = 996,846.07