Finding the Third Proportional to 20,590.31 and 31,144.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,590.31 : 31,144.88 = 31,144.88 : x
2. Step 2: Convert to fraction form
   20,590.31/31,144.88 = 31,144.88/x
3. Step 3: Cross multiply
   20,590.31x = 31,144.88 × 31,144.88
4. Step 4: Simplify right side
   20,590.31x = 970,003,238.77
5. Step 5: Solve for x
   x = 970,003,238.77/20,590.31
6. Step 6: Final answer
   x = 47,109.69