Finding the Third Proportional to 90,662 and 196,387

Step by Step Solution

1. Step 1: Write the proportion equation
   90,662 : 196,387 = 196,387 : x
2. Step 2: Convert to fraction form
   90,662/196,387 = 196,387/x
3. Step 3: Cross multiply
   90,662x = 196,387 × 196,387
4. Step 4: Simplify right side
   90,662x = 38,567,853,769
5. Step 5: Solve for x
   x = 38,567,853,769/90,662
6. Step 6: Final answer
   x = 425,402.64