Finding the Third Proportional to 13,725 and 30,609

Step by Step Solution

1. Step 1: Write the proportion equation
   13,725 : 30,609 = 30,609 : x
2. Step 2: Convert to fraction form
   13,725/30,609 = 30,609/x
3. Step 3: Cross multiply
   13,725x = 30,609 × 30,609
4. Step 4: Simplify right side
   13,725x = 936,910,881
5. Step 5: Solve for x
   x = 936,910,881/13,725
6. Step 6: Final answer
   x = 68,263.09