Finding the Third Proportional to 20,144 and 42,970

Step by Step Solution

1. Step 1: Write the proportion equation
   20,144 : 42,970 = 42,970 : x
2. Step 2: Convert to fraction form
   20,144/42,970 = 42,970/x
3. Step 3: Cross multiply
   20,144x = 42,970 × 42,970
4. Step 4: Simplify right side
   20,144x = 1,846,420,900
5. Step 5: Solve for x
   x = 1,846,420,900/20,144
6. Step 6: Final answer
   x = 91,661.09