Finding the Third Proportional to 12,420 and 29,016

Step by Step Solution

1. Step 1: Write the proportion equation
   12,420 : 29,016 = 29,016 : x
2. Step 2: Convert to fraction form
   12,420/29,016 = 29,016/x
3. Step 3: Cross multiply
   12,420x = 29,016 × 29,016
4. Step 4: Simplify right side
   12,420x = 841,928,256
5. Step 5: Solve for x
   x = 841,928,256/12,420
6. Step 6: Final answer
   x = 67,788.10