Finding the Third Proportional to 90,436 and 196,762

Step by Step Solution

1. Step 1: Write the proportion equation
   90,436 : 196,762 = 196,762 : x
2. Step 2: Convert to fraction form
   90,436/196,762 = 196,762/x
3. Step 3: Cross multiply
   90,436x = 196,762 × 196,762
4. Step 4: Simplify right side
   90,436x = 38,715,284,644
5. Step 5: Solve for x
   x = 38,715,284,644/90,436
6. Step 6: Final answer
   x = 428,095.94