Finding the Third Proportional to 188,055 and 391,662

Step by Step Solution

1. Step 1: Write the proportion equation
   188,055 : 391,662 = 391,662 : x
2. Step 2: Convert to fraction form
   188,055/391,662 = 391,662/x
3. Step 3: Cross multiply
   188,055x = 391,662 × 391,662
4. Step 4: Simplify right side
   188,055x = 153,399,122,244
5. Step 5: Solve for x
   x = 153,399,122,244/188,055
6. Step 6: Final answer
   x = 815,714.14