Finding the Third Proportional to 21,816 and 29,012

Step by Step Solution

1. Step 1: Write the proportion equation
   21,816 : 29,012 = 29,012 : x
2. Step 2: Convert to fraction form
   21,816/29,012 = 29,012/x
3. Step 3: Cross multiply
   21,816x = 29,012 × 29,012
4. Step 4: Simplify right side
   21,816x = 841,696,144
5. Step 5: Solve for x
   x = 841,696,144/21,816
6. Step 6: Final answer
   x = 38,581.60