Finding the Third Proportional to 21,394.13 and 31,318.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,394.13 : 31,318.31 = 31,318.31 : x
2. Step 2: Convert to fraction form
   21,394.13/31,318.31 = 31,318.31/x
3. Step 3: Cross multiply
   21,394.13x = 31,318.31 × 31,318.31
4. Step 4: Simplify right side
   21,394.13x = 980,836,697.85
5. Step 5: Solve for x
   x = 980,836,697.85/21,394.13
6. Step 6: Final answer
   x = 45,846.08