Finding the Third Proportional to 50,378 and 70,622

Step by Step Solution

1. Step 1: Write the proportion equation
   50,378 : 70,622 = 70,622 : x
2. Step 2: Convert to fraction form
   50,378/70,622 = 70,622/x
3. Step 3: Cross multiply
   50,378x = 70,622 × 70,622
4. Step 4: Simplify right side
   50,378x = 4,987,466,884
5. Step 5: Solve for x
   x = 4,987,466,884/50,378
6. Step 6: Final answer
   x = 99,000.89