Finding the Third Proportional to 28,690 and 42,884

Step by Step Solution

1. Step 1: Write the proportion equation
   28,690 : 42,884 = 42,884 : x
2. Step 2: Convert to fraction form
   28,690/42,884 = 42,884/x
3. Step 3: Cross multiply
   28,690x = 42,884 × 42,884
4. Step 4: Simplify right side
   28,690x = 1,839,037,456
5. Step 5: Solve for x
   x = 1,839,037,456/28,690
6. Step 6: Final answer
   x = 64,100.29