Finding the Third Proportional to 454,776 and 636,132

Step by Step Solution

1. Step 1: Write the proportion equation
   454,776 : 636,132 = 636,132 : x
2. Step 2: Convert to fraction form
   454,776/636,132 = 636,132/x
3. Step 3: Cross multiply
   454,776x = 636,132 × 636,132
4. Step 4: Simplify right side
   454,776x = 404,663,921,424
5. Step 5: Solve for x
   x = 404,663,921,424/454,776
6. Step 6: Final answer
   x = 889,809.32