Finding the Third Proportional to 21,011.91 and 31,768.45

Step by Step Solution

1. Step 1: Write the proportion equation
   21,011.91 : 31,768.45 = 31,768.45 : x
2. Step 2: Convert to fraction form
   21,011.91/31,768.45 = 31,768.45/x
3. Step 3: Cross multiply
   21,011.91x = 31,768.45 × 31,768.45
4. Step 4: Simplify right side
   21,011.91x = 1,009,234,613.96
5. Step 5: Solve for x
   x = 1,009,234,613.96/21,011.91
6. Step 6: Final answer
   x = 48,031.56