Finding the Third Proportional to 199,456 and 426,936

Step by Step Solution

1. Step 1: Write the proportion equation
   199,456 : 426,936 = 426,936 : x
2. Step 2: Convert to fraction form
   199,456/426,936 = 426,936/x
3. Step 3: Cross multiply
   199,456x = 426,936 × 426,936
4. Step 4: Simplify right side
   199,456x = 182,274,348,096
5. Step 5: Solve for x
   x = 182,274,348,096/199,456
6. Step 6: Final answer
   x = 913,857.43