Finding the Third Proportional to 131,789 and 204,245

Step by Step Solution

1. Step 1: Write the proportion equation
   131,789 : 204,245 = 204,245 : x
2. Step 2: Convert to fraction form
   131,789/204,245 = 204,245/x
3. Step 3: Cross multiply
   131,789x = 204,245 × 204,245
4. Step 4: Simplify right side
   131,789x = 41,716,020,025
5. Step 5: Solve for x
   x = 41,716,020,025/131,789
6. Step 6: Final answer
   x = 316,536.43