Finding the Third Proportional to 309,997 and 479,064

Step by Step Solution

1. Step 1: Write the proportion equation
   309,997 : 479,064 = 479,064 : x
2. Step 2: Convert to fraction form
   309,997/479,064 = 479,064/x
3. Step 3: Cross multiply
   309,997x = 479,064 × 479,064
4. Step 4: Simplify right side
   309,997x = 229,502,316,096
5. Step 5: Solve for x
   x = 229,502,316,096/309,997
6. Step 6: Final answer
   x = 740,337.22