Finding the Third Proportional to 2,487.38 and 5,619.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.38 : 5,619.94 = 5,619.94 : x
2. Step 2: Convert to fraction form
   2,487.38/5,619.94 = 5,619.94/x
3. Step 3: Cross multiply
   2,487.38x = 5,619.94 × 5,619.94
4. Step 4: Simplify right side
   2,487.38x = 31,583,697.50
5. Step 5: Solve for x
   x = 31,583,697.50/2,487.38
6. Step 6: Final answer
   x = 12,697.60