Finding the Third Proportional to 66,072 and 142,026

Step by Step Solution

1. Step 1: Write the proportion equation
   66,072 : 142,026 = 142,026 : x
2. Step 2: Convert to fraction form
   66,072/142,026 = 142,026/x
3. Step 3: Cross multiply
   66,072x = 142,026 × 142,026
4. Step 4: Simplify right side
   66,072x = 20,171,384,676
5. Step 5: Solve for x
   x = 20,171,384,676/66,072
6. Step 6: Final answer
   x = 305,293.99