Finding the Third Proportional to 11,891.81 and 25,423.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,891.81 : 25,423.88 = 25,423.88 : x
2. Step 2: Convert to fraction form
   11,891.81/25,423.88 = 25,423.88/x
3. Step 3: Cross multiply
   11,891.81x = 25,423.88 × 25,423.88
4. Step 4: Simplify right side
   11,891.81x = 646,373,420.02
5. Step 5: Solve for x
   x = 646,373,420.02/11,891.81
6. Step 6: Final answer
   x = 54,354.49