Finding the Third Proportional to 12,209.94 and 25,918.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,209.94 : 25,918.69 = 25,918.69 : x
2. Step 2: Convert to fraction form
   12,209.94/25,918.69 = 25,918.69/x
3. Step 3: Cross multiply
   12,209.94x = 25,918.69 × 25,918.69
4. Step 4: Simplify right side
   12,209.94x = 671,778,361.72
5. Step 5: Solve for x
   x = 671,778,361.72/12,209.94
6. Step 6: Final answer
   x = 55,018.98