Finding the Third Proportional to 21,546 and 31,609

Step by Step Solution

1. Step 1: Write the proportion equation
   21,546 : 31,609 = 31,609 : x
2. Step 2: Convert to fraction form
   21,546/31,609 = 31,609/x
3. Step 3: Cross multiply
   21,546x = 31,609 × 31,609
4. Step 4: Simplify right side
   21,546x = 999,128,881
5. Step 5: Solve for x
   x = 999,128,881/21,546
6. Step 6: Final answer
   x = 46,371.90