Finding the Third Proportional to 179,132 and 391,012

Step by Step Solution

1. Step 1: Write the proportion equation
   179,132 : 391,012 = 391,012 : x
2. Step 2: Convert to fraction form
   179,132/391,012 = 391,012/x
3. Step 3: Cross multiply
   179,132x = 391,012 × 391,012
4. Step 4: Simplify right side
   179,132x = 152,890,384,144
5. Step 5: Solve for x
   x = 152,890,384,144/179,132
6. Step 6: Final answer
   x = 853,506.82