Finding the Third Proportional to 131,568 and 276,890

Step by Step Solution

1. Step 1: Write the proportion equation
   131,568 : 276,890 = 276,890 : x
2. Step 2: Convert to fraction form
   131,568/276,890 = 276,890/x
3. Step 3: Cross multiply
   131,568x = 276,890 × 276,890
4. Step 4: Simplify right side
   131,568x = 76,668,072,100
5. Step 5: Solve for x
   x = 76,668,072,100/131,568
6. Step 6: Final answer
   x = 582,725.83