Finding the Third Proportional to 132,439.50 and 288,525

Step by Step Solution

1. Step 1: Write the proportion equation
   132,439.50 : 288,525 = 288,525 : x
2. Step 2: Convert to fraction form
   132,439.50/288,525 = 288,525/x
3. Step 3: Cross multiply
   132,439.50x = 288,525 × 288,525
4. Step 4: Simplify right side
   132,439.50x = 83,246,675,625
5. Step 5: Solve for x
   x = 83,246,675,625/132,439.50
6. Step 6: Final answer
   x = 628,563.80