Finding the Third Proportional to 161,136 and 245,256

Step by Step Solution

1. Step 1: Write the proportion equation
   161,136 : 245,256 = 245,256 : x
2. Step 2: Convert to fraction form
   161,136/245,256 = 245,256/x
3. Step 3: Cross multiply
   161,136x = 245,256 × 245,256
4. Step 4: Simplify right side
   161,136x = 60,150,505,536
5. Step 5: Solve for x
   x = 60,150,505,536/161,136
6. Step 6: Final answer
   x = 373,290.30