Finding the Third Proportional to 5,619.38 and 8,530.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,619.38 : 8,530.31 = 8,530.31 : x
2. Step 2: Convert to fraction form
   5,619.38/8,530.31 = 8,530.31/x
3. Step 3: Cross multiply
   5,619.38x = 8,530.31 × 8,530.31
4. Step 4: Simplify right side
   5,619.38x = 72,766,231.35
5. Step 5: Solve for x
   x = 72,766,231.35/5,619.38
6. Step 6: Final answer
   x = 12,949.17