Finding the Third Proportional to 90,631 and 194,388

Step by Step Solution

1. Step 1: Write the proportion equation
   90,631 : 194,388 = 194,388 : x
2. Step 2: Convert to fraction form
   90,631/194,388 = 194,388/x
3. Step 3: Cross multiply
   90,631x = 194,388 × 194,388
4. Step 4: Simplify right side
   90,631x = 37,786,694,544
5. Step 5: Solve for x
   x = 37,786,694,544/90,631
6. Step 6: Final answer
   x = 416,929.03