Finding the Third Proportional to 236,470 and 489,770

Step by Step Solution

1. Step 1: Write the proportion equation
   236,470 : 489,770 = 489,770 : x
2. Step 2: Convert to fraction form
   236,470/489,770 = 489,770/x
3. Step 3: Cross multiply
   236,470x = 489,770 × 489,770
4. Step 4: Simplify right side
   236,470x = 239,874,652,900
5. Step 5: Solve for x
   x = 239,874,652,900/236,470
6. Step 6: Final answer
   x = 1,014,397.82