Finding the Third Proportional to 132,961.50 and 288,076.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,961.50 : 288,076.50 = 288,076.50 : x
2. Step 2: Convert to fraction form
   132,961.50/288,076.50 = 288,076.50/x
3. Step 3: Cross multiply
   132,961.50x = 288,076.50 × 288,076.50
4. Step 4: Simplify right side
   132,961.50x = 82,988,069,852.25
5. Step 5: Solve for x
   x = 82,988,069,852.25/132,961.50
6. Step 6: Final answer
   x = 624,151.13