Finding the Third Proportional to 21,051 and 31,929

Step by Step Solution

1. Step 1: Write the proportion equation
   21,051 : 31,929 = 31,929 : x
2. Step 2: Convert to fraction form
   21,051/31,929 = 31,929/x
3. Step 3: Cross multiply
   21,051x = 31,929 × 31,929
4. Step 4: Simplify right side
   21,051x = 1,019,461,041
5. Step 5: Solve for x
   x = 1,019,461,041/21,051
6. Step 6: Final answer
   x = 48,428.15