Finding the Third Proportional to 279,466 and 395,061

Step by Step Solution

1. Step 1: Write the proportion equation
   279,466 : 395,061 = 395,061 : x
2. Step 2: Convert to fraction form
   279,466/395,061 = 395,061/x
3. Step 3: Cross multiply
   279,466x = 395,061 × 395,061
4. Step 4: Simplify right side
   279,466x = 156,073,193,721
5. Step 5: Solve for x
   x = 156,073,193,721/279,466
6. Step 6: Final answer
   x = 558,469.34