Finding the Third Proportional to 13,340 and 30,920

Step by Step Solution

1. Step 1: Write the proportion equation
   13,340 : 30,920 = 30,920 : x
2. Step 2: Convert to fraction form
   13,340/30,920 = 30,920/x
3. Step 3: Cross multiply
   13,340x = 30,920 × 30,920
4. Step 4: Simplify right side
   13,340x = 956,046,400
5. Step 5: Solve for x
   x = 956,046,400/13,340
6. Step 6: Final answer
   x = 71,667.65