Finding the Third Proportional to 10,055.31 and 13,222.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,055.31 : 13,222.78 = 13,222.78 : x
2. Step 2: Convert to fraction form
   10,055.31/13,222.78 = 13,222.78/x
3. Step 3: Cross multiply
   10,055.31x = 13,222.78 × 13,222.78
4. Step 4: Simplify right side
   10,055.31x = 174,841,943.99
5. Step 5: Solve for x
   x = 174,841,943.99/10,055.31
6. Step 6: Final answer
   x = 17,388.02