Finding the Third Proportional to 28,742 and 42,936

Step by Step Solution

1. Step 1: Write the proportion equation
   28,742 : 42,936 = 42,936 : x
2. Step 2: Convert to fraction form
   28,742/42,936 = 42,936/x
3. Step 3: Cross multiply
   28,742x = 42,936 × 42,936
4. Step 4: Simplify right side
   28,742x = 1,843,500,096
5. Step 5: Solve for x
   x = 1,843,500,096/28,742
6. Step 6: Final answer
   x = 64,139.59