Finding the Third Proportional to 131,401 and 288,238

Step by Step Solution

1. Step 1: Write the proportion equation
   131,401 : 288,238 = 288,238 : x
2. Step 2: Convert to fraction form
   131,401/288,238 = 288,238/x
3. Step 3: Cross multiply
   131,401x = 288,238 × 288,238
4. Step 4: Simplify right side
   131,401x = 83,081,144,644
5. Step 5: Solve for x
   x = 83,081,144,644/131,401
6. Step 6: Final answer
   x = 632,271.78