Finding the Third Proportional to 405,595.69 and 636,229.69

Step by Step Solution

1. Step 1: Write the proportion equation
   405,595.69 : 636,229.69 = 636,229.69 : x
2. Step 2: Convert to fraction form
   405,595.69/636,229.69 = 636,229.69/x
3. Step 3: Cross multiply
   405,595.69x = 636,229.69 × 636,229.69
4. Step 4: Simplify right side
   405,595.69x = 404,788,215,256.35
5. Step 5: Solve for x
   x = 404,788,215,256.35/405,595.69
6. Step 6: Final answer
   x = 998,009.17