Finding the Third Proportional to 179,136 and 391,020

Step by Step Solution

1. Step 1: Write the proportion equation
   179,136 : 391,020 = 391,020 : x
2. Step 2: Convert to fraction form
   179,136/391,020 = 391,020/x
3. Step 3: Cross multiply
   179,136x = 391,020 × 391,020
4. Step 4: Simplify right side
   179,136x = 152,896,640,400
5. Step 5: Solve for x
   x = 152,896,640,400/179,136
6. Step 6: Final answer
   x = 853,522.69