Finding the Third Proportional to 129,026 and 205,443

Step by Step Solution

1. Step 1: Write the proportion equation
   129,026 : 205,443 = 205,443 : x
2. Step 2: Convert to fraction form
   129,026/205,443 = 205,443/x
3. Step 3: Cross multiply
   129,026x = 205,443 × 205,443
4. Step 4: Simplify right side
   129,026x = 42,206,826,249
5. Step 5: Solve for x
   x = 42,206,826,249/129,026
6. Step 6: Final answer
   x = 327,118.77