Finding the Third Proportional to 1,578.38 and 2,310.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578.38 : 2,310.56 = 2,310.56 : x
2. Step 2: Convert to fraction form
   1,578.38/2,310.56 = 2,310.56/x
3. Step 3: Cross multiply
   1,578.38x = 2,310.56 × 2,310.56
4. Step 4: Simplify right side
   1,578.38x = 5,338,699.07
5. Step 5: Solve for x
   x = 5,338,699.07/1,578.38
6. Step 6: Final answer
   x = 3,382.40