Finding the Third Proportional to 123,240 and 267,072

Step by Step Solution

1. Step 1: Write the proportion equation
   123,240 : 267,072 = 267,072 : x
2. Step 2: Convert to fraction form
   123,240/267,072 = 267,072/x
3. Step 3: Cross multiply
   123,240x = 267,072 × 267,072
4. Step 4: Simplify right side
   123,240x = 71,327,453,184
5. Step 5: Solve for x
   x = 71,327,453,184/123,240
6. Step 6: Final answer
   x = 578,768.69