Finding the Third Proportional to 267,606 and 415,248.75

Step by Step Solution

1. Step 1: Write the proportion equation
   267,606 : 415,248.75 = 415,248.75 : x
2. Step 2: Convert to fraction form
   267,606/415,248.75 = 415,248.75/x
3. Step 3: Cross multiply
   267,606x = 415,248.75 × 415,248.75
4. Step 4: Simplify right side
   267,606x = 172,431,524,376.56
5. Step 5: Solve for x
   x = 172,431,524,376.56/267,606
6. Step 6: Final answer
   x = 644,348.50