Finding the Third Proportional to 15,468 and 21,930

Step by Step Solution

1. Step 1: Write the proportion equation
   15,468 : 21,930 = 21,930 : x
2. Step 2: Convert to fraction form
   15,468/21,930 = 21,930/x
3. Step 3: Cross multiply
   15,468x = 21,930 × 21,930
4. Step 4: Simplify right side
   15,468x = 480,924,900
5. Step 5: Solve for x
   x = 480,924,900/15,468
6. Step 6: Final answer
   x = 31,091.60