Finding the Third Proportional to 20,877.75 and 31,807.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,877.75 : 31,807.69 = 31,807.69 : x
2. Step 2: Convert to fraction form
   20,877.75/31,807.69 = 31,807.69/x
3. Step 3: Cross multiply
   20,877.75x = 31,807.69 × 31,807.69
4. Step 4: Simplify right side
   20,877.75x = 1,011,728,984.10
5. Step 5: Solve for x
   x = 1,011,728,984.10/20,877.75
6. Step 6: Final answer
   x = 48,459.68