Finding the Third Proportional to 5,308.03 and 8,398.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,308.03 : 8,398.69 = 8,398.69 : x
2. Step 2: Convert to fraction form
   5,308.03/8,398.69 = 8,398.69/x
3. Step 3: Cross multiply
   5,308.03x = 8,398.69 × 8,398.69
4. Step 4: Simplify right side
   5,308.03x = 70,537,951.72
5. Step 5: Solve for x
   x = 70,537,951.72/5,308.03
6. Step 6: Final answer
   x = 13,288.91