Finding the Third Proportional to 21,088 and 43,616

Step by Step Solution

1. Step 1: Write the proportion equation
   21,088 : 43,616 = 43,616 : x
2. Step 2: Convert to fraction form
   21,088/43,616 = 43,616/x
3. Step 3: Cross multiply
   21,088x = 43,616 × 43,616
4. Step 4: Simplify right side
   21,088x = 1,902,355,456
5. Step 5: Solve for x
   x = 1,902,355,456/21,088
6. Step 6: Final answer
   x = 90,210.33