Finding the Third Proportional to 27,238 and 42,800

Step by Step Solution

1. Step 1: Write the proportion equation
   27,238 : 42,800 = 42,800 : x
2. Step 2: Convert to fraction form
   27,238/42,800 = 42,800/x
3. Step 3: Cross multiply
   27,238x = 42,800 × 42,800
4. Step 4: Simplify right side
   27,238x = 1,831,840,000
5. Step 5: Solve for x
   x = 1,831,840,000/27,238
6. Step 6: Final answer
   x = 67,253.10