Finding the Third Proportional to 10,054.13 and 13,221.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,054.13 : 13,221.35 = 13,221.35 : x
2. Step 2: Convert to fraction form
   10,054.13/13,221.35 = 13,221.35/x
3. Step 3: Cross multiply
   10,054.13x = 13,221.35 × 13,221.35
4. Step 4: Simplify right side
   10,054.13x = 174,804,137.14
5. Step 5: Solve for x
   x = 174,804,137.14/10,054.13
6. Step 6: Final answer
   x = 17,386.31