Finding the Third Proportional to 21,364 and 43,772

Step by Step Solution

1. Step 1: Write the proportion equation
   21,364 : 43,772 = 43,772 : x
2. Step 2: Convert to fraction form
   21,364/43,772 = 43,772/x
3. Step 3: Cross multiply
   21,364x = 43,772 × 43,772
4. Step 4: Simplify right side
   21,364x = 1,915,987,984
5. Step 5: Solve for x
   x = 1,915,987,984/21,364
6. Step 6: Final answer
   x = 89,683.02