Finding the Third Proportional to 20,109 and 31,360

Step by Step Solution

1. Step 1: Write the proportion equation
   20,109 : 31,360 = 31,360 : x
2. Step 2: Convert to fraction form
   20,109/31,360 = 31,360/x
3. Step 3: Cross multiply
   20,109x = 31,360 × 31,360
4. Step 4: Simplify right side
   20,109x = 983,449,600
5. Step 5: Solve for x
   x = 983,449,600/20,109
6. Step 6: Final answer
   x = 48,905.94