Finding the Third Proportional to 129,559.50 and 281,250

Step by Step Solution

1. Step 1: Write the proportion equation
   129,559.50 : 281,250 = 281,250 : x
2. Step 2: Convert to fraction form
   129,559.50/281,250 = 281,250/x
3. Step 3: Cross multiply
   129,559.50x = 281,250 × 281,250
4. Step 4: Simplify right side
   129,559.50x = 79,101,562,500
5. Step 5: Solve for x
   x = 79,101,562,500/129,559.50
6. Step 6: Final answer
   x = 610,542.36