Finding the Third Proportional to 131,931 and 311,131

Step by Step Solution

1. Step 1: Write the proportion equation
   131,931 : 311,131 = 311,131 : x
2. Step 2: Convert to fraction form
   131,931/311,131 = 311,131/x
3. Step 3: Cross multiply
   131,931x = 311,131 × 311,131
4. Step 4: Simplify right side
   131,931x = 96,802,499,161
5. Step 5: Solve for x
   x = 96,802,499,161/131,931
6. Step 6: Final answer
   x = 733,735.81