Finding the Third Proportional to 123,342 and 267,420

Step by Step Solution

1. Step 1: Write the proportion equation
   123,342 : 267,420 = 267,420 : x
2. Step 2: Convert to fraction form
   123,342/267,420 = 267,420/x
3. Step 3: Cross multiply
   123,342x = 267,420 × 267,420
4. Step 4: Simplify right side
   123,342x = 71,513,456,400
5. Step 5: Solve for x
   x = 71,513,456,400/123,342
6. Step 6: Final answer
   x = 579,798.09