Finding the Third Proportional to 123,210 and 267,140

Step by Step Solution

1. Step 1: Write the proportion equation
   123,210 : 267,140 = 267,140 : x
2. Step 2: Convert to fraction form
   123,210/267,140 = 267,140/x
3. Step 3: Cross multiply
   123,210x = 267,140 × 267,140
4. Step 4: Simplify right side
   123,210x = 71,363,779,600
5. Step 5: Solve for x
   x = 71,363,779,600/123,210
6. Step 6: Final answer
   x = 579,204.44