Finding the Third Proportional to 9,616 and 20,390

Step by Step Solution

1. Step 1: Write the proportion equation
   9,616 : 20,390 = 20,390 : x
2. Step 2: Convert to fraction form
   9,616/20,390 = 20,390/x
3. Step 3: Cross multiply
   9,616x = 20,390 × 20,390
4. Step 4: Simplify right side
   9,616x = 415,752,100
5. Step 5: Solve for x
   x = 415,752,100/9,616
6. Step 6: Final answer
   x = 43,235.45