Finding the Third Proportional to 20,612 and 31,190

Step by Step Solution

1. Step 1: Write the proportion equation
   20,612 : 31,190 = 31,190 : x
2. Step 2: Convert to fraction form
   20,612/31,190 = 31,190/x
3. Step 3: Cross multiply
   20,612x = 31,190 × 31,190
4. Step 4: Simplify right side
   20,612x = 972,816,100
5. Step 5: Solve for x
   x = 972,816,100/20,612
6. Step 6: Final answer
   x = 47,196.59