Finding the Third Proportional to 9,661 and 20,360

Step by Step Solution

1. Step 1: Write the proportion equation
   9,661 : 20,360 = 20,360 : x
2. Step 2: Convert to fraction form
   9,661/20,360 = 20,360/x
3. Step 3: Cross multiply
   9,661x = 20,360 × 20,360
4. Step 4: Simplify right side
   9,661x = 414,529,600
5. Step 5: Solve for x
   x = 414,529,600/9,661
6. Step 6: Final answer
   x = 42,907.53