Finding the Third Proportional to 131,495 and 288,018

Step by Step Solution

1. Step 1: Write the proportion equation
   131,495 : 288,018 = 288,018 : x
2. Step 2: Convert to fraction form
   131,495/288,018 = 288,018/x
3. Step 3: Cross multiply
   131,495x = 288,018 × 288,018
4. Step 4: Simplify right side
   131,495x = 82,954,368,324
5. Step 5: Solve for x
   x = 82,954,368,324/131,495
6. Step 6: Final answer
   x = 630,855.69