Finding the Third Proportional to 55,659 and 131,256

Step by Step Solution

1. Step 1: Write the proportion equation
   55,659 : 131,256 = 131,256 : x
2. Step 2: Convert to fraction form
   55,659/131,256 = 131,256/x
3. Step 3: Cross multiply
   55,659x = 131,256 × 131,256
4. Step 4: Simplify right side
   55,659x = 17,228,137,536
5. Step 5: Solve for x
   x = 17,228,137,536/55,659
6. Step 6: Final answer
   x = 309,530.13