Finding the Third Proportional to 16,405.88 and 25,428.94

Step by Step Solution

1. Step 1: Write the proportion equation
   16,405.88 : 25,428.94 = 25,428.94 : x
2. Step 2: Convert to fraction form
   16,405.88/25,428.94 = 25,428.94/x
3. Step 3: Cross multiply
   16,405.88x = 25,428.94 × 25,428.94
4. Step 4: Simplify right side
   16,405.88x = 646,630,862.38
5. Step 5: Solve for x
   x = 646,630,862.38/16,405.88
6. Step 6: Final answer
   x = 39,414.59