Finding the Third Proportional to 131,908 and 311,072

Step by Step Solution

1. Step 1: Write the proportion equation
   131,908 : 311,072 = 311,072 : x
2. Step 2: Convert to fraction form
   131,908/311,072 = 311,072/x
3. Step 3: Cross multiply
   131,908x = 311,072 × 311,072
4. Step 4: Simplify right side
   131,908x = 96,765,789,184
5. Step 5: Solve for x
   x = 96,765,789,184/131,908
6. Step 6: Final answer
   x = 733,585.45