Finding the Third Proportional to 28,540 and 42,702

Step by Step Solution

1. Step 1: Write the proportion equation
   28,540 : 42,702 = 42,702 : x
2. Step 2: Convert to fraction form
   28,540/42,702 = 42,702/x
3. Step 3: Cross multiply
   28,540x = 42,702 × 42,702
4. Step 4: Simplify right side
   28,540x = 1,823,460,804
5. Step 5: Solve for x
   x = 1,823,460,804/28,540
6. Step 6: Final answer
   x = 63,891.41