Finding the Third Proportional to 191,055 and 400,698

Step by Step Solution

1. Step 1: Write the proportion equation
   191,055 : 400,698 = 400,698 : x
2. Step 2: Convert to fraction form
   191,055/400,698 = 400,698/x
3. Step 3: Cross multiply
   191,055x = 400,698 × 400,698
4. Step 4: Simplify right side
   191,055x = 160,558,887,204
5. Step 5: Solve for x
   x = 160,558,887,204/191,055
6. Step 6: Final answer
   x = 840,380.45