Finding the Third Proportional to 131,398.50 and 288,231

Step by Step Solution

1. Step 1: Write the proportion equation
   131,398.50 : 288,231 = 288,231 : x
2. Step 2: Convert to fraction form
   131,398.50/288,231 = 288,231/x
3. Step 3: Cross multiply
   131,398.50x = 288,231 × 288,231
4. Step 4: Simplify right side
   131,398.50x = 83,077,109,361
5. Step 5: Solve for x
   x = 83,077,109,361/131,398.50
6. Step 6: Final answer
   x = 632,253.10