Finding the Third Proportional to 90,622 and 196,816

Step by Step Solution

1. Step 1: Write the proportion equation
   90,622 : 196,816 = 196,816 : x
2. Step 2: Convert to fraction form
   90,622/196,816 = 196,816/x
3. Step 3: Cross multiply
   90,622x = 196,816 × 196,816
4. Step 4: Simplify right side
   90,622x = 38,736,537,856
5. Step 5: Solve for x
   x = 38,736,537,856/90,622
6. Step 6: Final answer
   x = 427,451.81