Finding the Third Proportional to 15,418.69 and 31,930.88

Step by Step Solution

1. Step 1: Write the proportion equation
   15,418.69 : 31,930.88 = 31,930.88 : x
2. Step 2: Convert to fraction form
   15,418.69/31,930.88 = 31,930.88/x
3. Step 3: Cross multiply
   15,418.69x = 31,930.88 × 31,930.88
4. Step 4: Simplify right side
   15,418.69x = 1,019,580,778.27
5. Step 5: Solve for x
   x = 1,019,580,778.27/15,418.69
6. Step 6: Final answer
   x = 66,126.30