Finding the Third Proportional to 2,487.56 and 5,376.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.56 : 5,376.56 = 5,376.56 : x
2. Step 2: Convert to fraction form
   2,487.56/5,376.56 = 5,376.56/x
3. Step 3: Cross multiply
   2,487.56x = 5,376.56 × 5,376.56
4. Step 4: Simplify right side
   2,487.56x = 28,907,424.32
5. Step 5: Solve for x
   x = 28,907,424.32/2,487.56
6. Step 6: Final answer
   x = 11,620.78