Finding the Third Proportional to 17,055.56 and 18,316.13

Step by Step Solution

1. Step 1: Write the proportion equation
   17,055.56 : 18,316.13 = 18,316.13 : x
2. Step 2: Convert to fraction form
   17,055.56/18,316.13 = 18,316.13/x
3. Step 3: Cross multiply
   17,055.56x = 18,316.13 × 18,316.13
4. Step 4: Simplify right side
   17,055.56x = 335,480,435.02
5. Step 5: Solve for x
   x = 335,480,435.02/17,055.56
6. Step 6: Final answer
   x = 19,669.85