Finding the Third Proportional to 11,787 and 25,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,787 : 25,419.50 = 25,419.50 : x
2. Step 2: Convert to fraction form
   11,787/25,419.50 = 25,419.50/x
3. Step 3: Cross multiply
   11,787x = 25,419.50 × 25,419.50
4. Step 4: Simplify right side
   11,787x = 646,150,980.25
5. Step 5: Solve for x
   x = 646,150,980.25/11,787
6. Step 6: Final answer
   x = 54,818.95