Finding the Third Proportional to 32,420 and 50,790

Step by Step Solution

1. Step 1: Write the proportion equation
   32,420 : 50,790 = 50,790 : x
2. Step 2: Convert to fraction form
   32,420/50,790 = 50,790/x
3. Step 3: Cross multiply
   32,420x = 50,790 × 50,790
4. Step 4: Simplify right side
   32,420x = 2,579,624,100
5. Step 5: Solve for x
   x = 2,579,624,100/32,420
6. Step 6: Final answer
   x = 79,568.91