Finding the Third Proportional to 90,017 and 196,979

Step by Step Solution

1. Step 1: Write the proportion equation
   90,017 : 196,979 = 196,979 : x
2. Step 2: Convert to fraction form
   90,017/196,979 = 196,979/x
3. Step 3: Cross multiply
   90,017x = 196,979 × 196,979
4. Step 4: Simplify right side
   90,017x = 38,800,726,441
5. Step 5: Solve for x
   x = 38,800,726,441/90,017
6. Step 6: Final answer
   x = 431,037.76