Finding the Third Proportional to 91,280 and 196,042

Step by Step Solution

1. Step 1: Write the proportion equation
   91,280 : 196,042 = 196,042 : x
2. Step 2: Convert to fraction form
   91,280/196,042 = 196,042/x
3. Step 3: Cross multiply
   91,280x = 196,042 × 196,042
4. Step 4: Simplify right side
   91,280x = 38,432,465,764
5. Step 5: Solve for x
   x = 38,432,465,764/91,280
6. Step 6: Final answer
   x = 421,039.28