Finding the Third Proportional to 12,577.78 and 17,021.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,577.78 : 17,021.39 = 17,021.39 : x
2. Step 2: Convert to fraction form
   12,577.78/17,021.39 = 17,021.39/x
3. Step 3: Cross multiply
   12,577.78x = 17,021.39 × 17,021.39
4. Step 4: Simplify right side
   12,577.78x = 289,727,738.81
5. Step 5: Solve for x
   x = 289,727,738.81/12,577.78
6. Step 6: Final answer
   x = 23,034.88