Finding the Third Proportional to 28,328 and 42,558

Step by Step Solution

1. Step 1: Write the proportion equation
   28,328 : 42,558 = 42,558 : x
2. Step 2: Convert to fraction form
   28,328/42,558 = 42,558/x
3. Step 3: Cross multiply
   28,328x = 42,558 × 42,558
4. Step 4: Simplify right side
   28,328x = 1,811,183,364
5. Step 5: Solve for x
   x = 1,811,183,364/28,328
6. Step 6: Final answer
   x = 63,936.15