Finding the Third Proportional to 20,979 and 31,773

Step by Step Solution

1. Step 1: Write the proportion equation
   20,979 : 31,773 = 31,773 : x
2. Step 2: Convert to fraction form
   20,979/31,773 = 31,773/x
3. Step 3: Cross multiply
   20,979x = 31,773 × 31,773
4. Step 4: Simplify right side
   20,979x = 1,009,523,529
5. Step 5: Solve for x
   x = 1,009,523,529/20,979
6. Step 6: Final answer
   x = 48,120.67