Finding the Third Proportional to 309,995 and 479,061

Step by Step Solution

1. Step 1: Write the proportion equation
   309,995 : 479,061 = 479,061 : x
2. Step 2: Convert to fraction form
   309,995/479,061 = 479,061/x
3. Step 3: Cross multiply
   309,995x = 479,061 × 479,061
4. Step 4: Simplify right side
   309,995x = 229,499,441,721
5. Step 5: Solve for x
   x = 229,499,441,721/309,995
6. Step 6: Final answer
   x = 740,332.72