Finding the Third Proportional to 322,871 and 503,928

Step by Step Solution

1. Step 1: Write the proportion equation
   322,871 : 503,928 = 503,928 : x
2. Step 2: Convert to fraction form
   322,871/503,928 = 503,928/x
3. Step 3: Cross multiply
   322,871x = 503,928 × 503,928
4. Step 4: Simplify right side
   322,871x = 253,943,429,184
5. Step 5: Solve for x
   x = 253,943,429,184/322,871
6. Step 6: Final answer
   x = 786,516.69