Finding the Third Proportional to 11,911.88 and 25,406.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,911.88 : 25,406.25 = 25,406.25 : x
2. Step 2: Convert to fraction form
   11,911.88/25,406.25 = 25,406.25/x
3. Step 3: Cross multiply
   11,911.88x = 25,406.25 × 25,406.25
4. Step 4: Simplify right side
   11,911.88x = 645,477,539.06
5. Step 5: Solve for x
   x = 645,477,539.06/11,911.88
6. Step 6: Final answer
   x = 54,187.74