Finding the Third Proportional to 131,310 and 288,036

Step by Step Solution

1. Step 1: Write the proportion equation
   131,310 : 288,036 = 288,036 : x
2. Step 2: Convert to fraction form
   131,310/288,036 = 288,036/x
3. Step 3: Cross multiply
   131,310x = 288,036 × 288,036
4. Step 4: Simplify right side
   131,310x = 82,964,737,296
5. Step 5: Solve for x
   x = 82,964,737,296/131,310
6. Step 6: Final answer
   x = 631,823.45