Finding the Third Proportional to 21,177 and 30,970

Step by Step Solution

1. Step 1: Write the proportion equation
   21,177 : 30,970 = 30,970 : x
2. Step 2: Convert to fraction form
   21,177/30,970 = 30,970/x
3. Step 3: Cross multiply
   21,177x = 30,970 × 30,970
4. Step 4: Simplify right side
   21,177x = 959,140,900
5. Step 5: Solve for x
   x = 959,140,900/21,177
6. Step 6: Final answer
   x = 45,291.63