Finding the Third Proportional to 4,328.72 and 9,349.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,328.72 : 9,349.31 = 9,349.31 : x
2. Step 2: Convert to fraction form
   4,328.72/9,349.31 = 9,349.31/x
3. Step 3: Cross multiply
   4,328.72x = 9,349.31 × 9,349.31
4. Step 4: Simplify right side
   4,328.72x = 87,409,644.22
5. Step 5: Solve for x
   x = 87,409,644.22/4,328.72
6. Step 6: Final answer
   x = 20,192.96