Finding the Third Proportional to 296,178 and 636,132

Step by Step Solution

1. Step 1: Write the proportion equation
   296,178 : 636,132 = 636,132 : x
2. Step 2: Convert to fraction form
   296,178/636,132 = 636,132/x
3. Step 3: Cross multiply
   296,178x = 636,132 × 636,132
4. Step 4: Simplify right side
   296,178x = 404,663,921,424
5. Step 5: Solve for x
   x = 404,663,921,424/296,178
6. Step 6: Final answer
   x = 1,366,286.22