Finding the Third Proportional to 90,434 and 188,932

Step by Step Solution

1. Step 1: Write the proportion equation
   90,434 : 188,932 = 188,932 : x
2. Step 2: Convert to fraction form
   90,434/188,932 = 188,932/x
3. Step 3: Cross multiply
   90,434x = 188,932 × 188,932
4. Step 4: Simplify right side
   90,434x = 35,695,300,624
5. Step 5: Solve for x
   x = 35,695,300,624/90,434
6. Step 6: Final answer
   x = 394,711.07