Finding the Third Proportional to 10,020 and 10,951.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,020 : 10,951.50 = 10,951.50 : x
2. Step 2: Convert to fraction form
   10,020/10,951.50 = 10,951.50/x
3. Step 3: Cross multiply
   10,020x = 10,951.50 × 10,951.50
4. Step 4: Simplify right side
   10,020x = 119,935,352.25
5. Step 5: Solve for x
   x = 119,935,352.25/10,020
6. Step 6: Final answer
   x = 11,969.60