Finding the Third Proportional to 132,408 and 288,144

Step by Step Solution

1. Step 1: Write the proportion equation
   132,408 : 288,144 = 288,144 : x
2. Step 2: Convert to fraction form
   132,408/288,144 = 288,144/x
3. Step 3: Cross multiply
   132,408x = 288,144 × 288,144
4. Step 4: Simplify right side
   132,408x = 83,026,964,736
5. Step 5: Solve for x
   x = 83,026,964,736/132,408
6. Step 6: Final answer
   x = 627,053.99