Finding the Third Proportional to 21,317.38 and 29,818.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,317.38 : 29,818.31 = 29,818.31 : x
2. Step 2: Convert to fraction form
   21,317.38/29,818.31 = 29,818.31/x
3. Step 3: Cross multiply
   21,317.38x = 29,818.31 × 29,818.31
4. Step 4: Simplify right side
   21,317.38x = 889,131,760.35
5. Step 5: Solve for x
   x = 889,131,760.35/21,317.38
6. Step 6: Final answer
   x = 41,709.25