Finding the Third Proportional to 15,616 and 21,968

Step by Step Solution

1. Step 1: Write the proportion equation
   15,616 : 21,968 = 21,968 : x
2. Step 2: Convert to fraction form
   15,616/21,968 = 21,968/x
3. Step 3: Cross multiply
   15,616x = 21,968 × 21,968
4. Step 4: Simplify right side
   15,616x = 482,593,024
5. Step 5: Solve for x
   x = 482,593,024/15,616
6. Step 6: Final answer
   x = 30,903.75