Finding the Third Proportional to 298,986 and 636,732

Step by Step Solution

1. Step 1: Write the proportion equation
   298,986 : 636,732 = 636,732 : x
2. Step 2: Convert to fraction form
   298,986/636,732 = 636,732/x
3. Step 3: Cross multiply
   298,986x = 636,732 × 636,732
4. Step 4: Simplify right side
   298,986x = 405,427,639,824
5. Step 5: Solve for x
   x = 405,427,639,824/298,986
6. Step 6: Final answer
   x = 1,356,008.78