Finding the Third Proportional to 139,250 and 285,874

Step by Step Solution

1. Step 1: Write the proportion equation
   139,250 : 285,874 = 285,874 : x
2. Step 2: Convert to fraction form
   139,250/285,874 = 285,874/x
3. Step 3: Cross multiply
   139,250x = 285,874 × 285,874
4. Step 4: Simplify right side
   139,250x = 81,723,943,876
5. Step 5: Solve for x
   x = 81,723,943,876/139,250
6. Step 6: Final answer
   x = 586,886.49