Finding the Third Proportional to 19,142 and 28,731

Step by Step Solution

1. Step 1: Write the proportion equation
   19,142 : 28,731 = 28,731 : x
2. Step 2: Convert to fraction form
   19,142/28,731 = 28,731/x
3. Step 3: Cross multiply
   19,142x = 28,731 × 28,731
4. Step 4: Simplify right side
   19,142x = 825,470,361
5. Step 5: Solve for x
   x = 825,470,361/19,142
6. Step 6: Final answer
   x = 43,123.52