Finding the Third Proportional to 187,099.50 and 288,030

Step by Step Solution

1. Step 1: Write the proportion equation
   187,099.50 : 288,030 = 288,030 : x
2. Step 2: Convert to fraction form
   187,099.50/288,030 = 288,030/x
3. Step 3: Cross multiply
   187,099.50x = 288,030 × 288,030
4. Step 4: Simplify right side
   187,099.50x = 82,961,280,900
5. Step 5: Solve for x
   x = 82,961,280,900/187,099.50
6. Step 6: Final answer
   x = 443,407.28