Finding the Third Proportional to 11,515 and 25,111

Step by Step Solution

1. Step 1: Write the proportion equation
   11,515 : 25,111 = 25,111 : x
2. Step 2: Convert to fraction form
   11,515/25,111 = 25,111/x
3. Step 3: Cross multiply
   11,515x = 25,111 × 25,111
4. Step 4: Simplify right side
   11,515x = 630,562,321
5. Step 5: Solve for x
   x = 630,562,321/11,515
6. Step 6: Final answer
   x = 54,760.08