Finding the Third Proportional to 11,457 and 25,128

Step by Step Solution

1. Step 1: Write the proportion equation
   11,457 : 25,128 = 25,128 : x
2. Step 2: Convert to fraction form
   11,457/25,128 = 25,128/x
3. Step 3: Cross multiply
   11,457x = 25,128 × 25,128
4. Step 4: Simplify right side
   11,457x = 631,416,384
5. Step 5: Solve for x
   x = 631,416,384/11,457
6. Step 6: Final answer
   x = 55,111.84