Finding the Third Proportional to 90,763 and 199,443

Step by Step Solution

1. Step 1: Write the proportion equation
   90,763 : 199,443 = 199,443 : x
2. Step 2: Convert to fraction form
   90,763/199,443 = 199,443/x
3. Step 3: Cross multiply
   90,763x = 199,443 × 199,443
4. Step 4: Simplify right side
   90,763x = 39,777,510,249
5. Step 5: Solve for x
   x = 39,777,510,249/90,763
6. Step 6: Final answer
   x = 438,256.89