Finding the Third Proportional to 28,389 and 42,981

Step by Step Solution

1. Step 1: Write the proportion equation
   28,389 : 42,981 = 42,981 : x
2. Step 2: Convert to fraction form
   28,389/42,981 = 42,981/x
3. Step 3: Cross multiply
   28,389x = 42,981 × 42,981
4. Step 4: Simplify right side
   28,389x = 1,847,366,361
5. Step 5: Solve for x
   x = 1,847,366,361/28,389
6. Step 6: Final answer
   x = 65,073.32