Finding the Third Proportional to 131,087 and 200,451

Step by Step Solution

1. Step 1: Write the proportion equation
   131,087 : 200,451 = 200,451 : x
2. Step 2: Convert to fraction form
   131,087/200,451 = 200,451/x
3. Step 3: Cross multiply
   131,087x = 200,451 × 200,451
4. Step 4: Simplify right side
   131,087x = 40,180,603,401
5. Step 5: Solve for x
   x = 40,180,603,401/131,087
6. Step 6: Final answer
   x = 306,518.60