Finding the Third Proportional to 20,679 and 31,632

Step by Step Solution

1. Step 1: Write the proportion equation
   20,679 : 31,632 = 31,632 : x
2. Step 2: Convert to fraction form
   20,679/31,632 = 31,632/x
3. Step 3: Cross multiply
   20,679x = 31,632 × 31,632
4. Step 4: Simplify right side
   20,679x = 1,000,583,424
5. Step 5: Solve for x
   x = 1,000,583,424/20,679
6. Step 6: Final answer
   x = 48,386.45