Finding the Third Proportional to 131,208 and 208,878.75

Step by Step Solution

1. Step 1: Write the proportion equation
   131,208 : 208,878.75 = 208,878.75 : x
2. Step 2: Convert to fraction form
   131,208/208,878.75 = 208,878.75/x
3. Step 3: Cross multiply
   131,208x = 208,878.75 × 208,878.75
4. Step 4: Simplify right side
   131,208x = 43,630,332,201.56
5. Step 5: Solve for x
   x = 43,630,332,201.56/131,208
6. Step 6: Final answer
   x = 332,527.99