Finding the Third Proportional to 11,818 and 25,172

Step by Step Solution

1. Step 1: Write the proportion equation
   11,818 : 25,172 = 25,172 : x
2. Step 2: Convert to fraction form
   11,818/25,172 = 25,172/x
3. Step 3: Cross multiply
   11,818x = 25,172 × 25,172
4. Step 4: Simplify right side
   11,818x = 633,629,584
5. Step 5: Solve for x
   x = 633,629,584/11,818
6. Step 6: Final answer
   x = 53,615.64