Finding the Third Proportional to 11,961.84 and 17,572.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,961.84 : 17,572.78 = 17,572.78 : x
2. Step 2: Convert to fraction form
   11,961.84/17,572.78 = 17,572.78/x
3. Step 3: Cross multiply
   11,961.84x = 17,572.78 × 17,572.78
4. Step 4: Simplify right side
   11,961.84x = 308,802,640.86
5. Step 5: Solve for x
   x = 308,802,640.86/11,961.84
6. Step 6: Final answer
   x = 25,815.64