Finding the Third Proportional to 20,960.86 and 31,156.31

Step by Step Solution

1. Step 1: Write the proportion equation
   20,960.86 : 31,156.31 = 31,156.31 : x
2. Step 2: Convert to fraction form
   20,960.86/31,156.31 = 31,156.31/x
3. Step 3: Cross multiply
   20,960.86x = 31,156.31 × 31,156.31
4. Step 4: Simplify right side
   20,960.86x = 970,715,808.60
5. Step 5: Solve for x
   x = 970,715,808.60/20,960.86
6. Step 6: Final answer
   x = 46,310.88