Finding the Third Proportional to 21,162.52 and 31,640.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,162.52 : 31,640.31 = 31,640.31 : x
2. Step 2: Convert to fraction form
   21,162.52/31,640.31 = 31,640.31/x
3. Step 3: Cross multiply
   21,162.52x = 31,640.31 × 31,640.31
4. Step 4: Simplify right side
   21,162.52x = 1,001,109,127.91
5. Step 5: Solve for x
   x = 1,001,109,127.91/21,162.52
6. Step 6: Final answer
   x = 47,305.77