Finding the Third Proportional to 12,389.63 and 25,804.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,389.63 : 25,804.88 = 25,804.88 : x
2. Step 2: Convert to fraction form
   12,389.63/25,804.88 = 25,804.88/x
3. Step 3: Cross multiply
   12,389.63x = 25,804.88 × 25,804.88
4. Step 4: Simplify right side
   12,389.63x = 665,891,573.77
5. Step 5: Solve for x
   x = 665,891,573.77/12,389.63
6. Step 6: Final answer
   x = 53,745.90