Finding the Third Proportional to 131,568 and 288,132

Step by Step Solution

1. Step 1: Write the proportion equation
   131,568 : 288,132 = 288,132 : x
2. Step 2: Convert to fraction form
   131,568/288,132 = 288,132/x
3. Step 3: Cross multiply
   131,568x = 288,132 × 288,132
4. Step 4: Simplify right side
   131,568x = 83,020,049,424
5. Step 5: Solve for x
   x = 83,020,049,424/131,568
6. Step 6: Final answer
   x = 631,004.88