Finding the Third Proportional to 356,016 and 721,856

Step by Step Solution

1. Step 1: Write the proportion equation
   356,016 : 721,856 = 721,856 : x
2. Step 2: Convert to fraction form
   356,016/721,856 = 721,856/x
3. Step 3: Cross multiply
   356,016x = 721,856 × 721,856
4. Step 4: Simplify right side
   356,016x = 521,076,084,736
5. Step 5: Solve for x
   x = 521,076,084,736/356,016
6. Step 6: Final answer
   x = 1,463,631.09