Finding the Third Proportional to 1,390.13 and 3,227.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,390.13 : 3,227.25 = 3,227.25 : x
2. Step 2: Convert to fraction form
   1,390.13/3,227.25 = 3,227.25/x
3. Step 3: Cross multiply
   1,390.13x = 3,227.25 × 3,227.25
4. Step 4: Simplify right side
   1,390.13x = 10,415,142.56
5. Step 5: Solve for x
   x = 10,415,142.56/1,390.13
6. Step 6: Final answer
   x = 7,492.23