Finding the Third Proportional to 302,700 and 636,766

Step by Step Solution

1. Step 1: Write the proportion equation
   302,700 : 636,766 = 636,766 : x
2. Step 2: Convert to fraction form
   302,700/636,766 = 636,766/x
3. Step 3: Cross multiply
   302,700x = 636,766 × 636,766
4. Step 4: Simplify right side
   302,700x = 405,470,938,756
5. Step 5: Solve for x
   x = 405,470,938,756/302,700
6. Step 6: Final answer
   x = 1,339,514.17