Finding the Third Proportional to 28,236 and 42,400

Step by Step Solution

1. Step 1: Write the proportion equation
   28,236 : 42,400 = 42,400 : x
2. Step 2: Convert to fraction form
   28,236/42,400 = 42,400/x
3. Step 3: Cross multiply
   28,236x = 42,400 × 42,400
4. Step 4: Simplify right side
   28,236x = 1,797,760,000
5. Step 5: Solve for x
   x = 1,797,760,000/28,236
6. Step 6: Final answer
   x = 63,669.07