Finding the Third Proportional to 110,570 and 238,420

Step by Step Solution

1. Step 1: Write the proportion equation
   110,570 : 238,420 = 238,420 : x
2. Step 2: Convert to fraction form
   110,570/238,420 = 238,420/x
3. Step 3: Cross multiply
   110,570x = 238,420 × 238,420
4. Step 4: Simplify right side
   110,570x = 56,844,096,400
5. Step 5: Solve for x
   x = 56,844,096,400/110,570
6. Step 6: Final answer
   x = 514,100.54