Finding the Third Proportional to 267,958 and 426,538

Step by Step Solution

1. Step 1: Write the proportion equation
   267,958 : 426,538 = 426,538 : x
2. Step 2: Convert to fraction form
   267,958/426,538 = 426,538/x
3. Step 3: Cross multiply
   267,958x = 426,538 × 426,538
4. Step 4: Simplify right side
   267,958x = 181,934,665,444
5. Step 5: Solve for x
   x = 181,934,665,444/267,958
6. Step 6: Final answer
   x = 678,967.10