Finding the Third Proportional to 404,159 and 561,951

Step by Step Solution

1. Step 1: Write the proportion equation
   404,159 : 561,951 = 561,951 : x
2. Step 2: Convert to fraction form
   404,159/561,951 = 561,951/x
3. Step 3: Cross multiply
   404,159x = 561,951 × 561,951
4. Step 4: Simplify right side
   404,159x = 315,788,926,401
5. Step 5: Solve for x
   x = 315,788,926,401/404,159
6. Step 6: Final answer
   x = 781,348.25