Finding the Third Proportional to 131,485 and 288,000

Step by Step Solution

1. Step 1: Write the proportion equation
   131,485 : 288,000 = 288,000 : x
2. Step 2: Convert to fraction form
   131,485/288,000 = 288,000/x
3. Step 3: Cross multiply
   131,485x = 288,000 × 288,000
4. Step 4: Simplify right side
   131,485x = 82,944,000,000
5. Step 5: Solve for x
   x = 82,944,000,000/131,485
6. Step 6: Final answer
   x = 630,824.81