Finding the Third Proportional to 30,249 and 42,309

Step by Step Solution

1. Step 1: Write the proportion equation
   30,249 : 42,309 = 42,309 : x
2. Step 2: Convert to fraction form
   30,249/42,309 = 42,309/x
3. Step 3: Cross multiply
   30,249x = 42,309 × 42,309
4. Step 4: Simplify right side
   30,249x = 1,790,051,481
5. Step 5: Solve for x
   x = 1,790,051,481/30,249
6. Step 6: Final answer
   x = 59,177.21