Finding the Third Proportional to 10,069.31 and 20,786.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,069.31 : 20,786.63 = 20,786.63 : x
2. Step 2: Convert to fraction form
   10,069.31/20,786.63 = 20,786.63/x
3. Step 3: Cross multiply
   10,069.31x = 20,786.63 × 20,786.63
4. Step 4: Simplify right side
   10,069.31x = 432,083,778.89
5. Step 5: Solve for x
   x = 432,083,778.89/10,069.31
6. Step 6: Final answer
   x = 42,910.95