Finding the Third Proportional to 90,662 and 199,446

Step by Step Solution

1. Step 1: Write the proportion equation
   90,662 : 199,446 = 199,446 : x
2. Step 2: Convert to fraction form
   90,662/199,446 = 199,446/x
3. Step 3: Cross multiply
   90,662x = 199,446 × 199,446
4. Step 4: Simplify right side
   90,662x = 39,778,706,916
5. Step 5: Solve for x
   x = 39,778,706,916/90,662
6. Step 6: Final answer
   x = 438,758.32