Finding the Third Proportional to 12,210.75 and 25,920.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,210.75 : 25,920.25 = 25,920.25 : x
2. Step 2: Convert to fraction form
   12,210.75/25,920.25 = 25,920.25/x
3. Step 3: Cross multiply
   12,210.75x = 25,920.25 × 25,920.25
4. Step 4: Simplify right side
   12,210.75x = 671,859,360.06
5. Step 5: Solve for x
   x = 671,859,360.06/12,210.75
6. Step 6: Final answer
   x = 55,021.96