Finding the Third Proportional to 8,959.50 and 10,620

Step by Step Solution

1. Step 1: Write the proportion equation
   8,959.50 : 10,620 = 10,620 : x
2. Step 2: Convert to fraction form
   8,959.50/10,620 = 10,620/x
3. Step 3: Cross multiply
   8,959.50x = 10,620 × 10,620
4. Step 4: Simplify right side
   8,959.50x = 112,784,400
5. Step 5: Solve for x
   x = 112,784,400/8,959.50
6. Step 6: Final answer
   x = 12,588.25