Finding the Third Proportional to 42,014 and 80,878

Step by Step Solution

1. Step 1: Write the proportion equation
   42,014 : 80,878 = 80,878 : x
2. Step 2: Convert to fraction form
   42,014/80,878 = 80,878/x
3. Step 3: Cross multiply
   42,014x = 80,878 × 80,878
4. Step 4: Simplify right side
   42,014x = 6,541,250,884
5. Step 5: Solve for x
   x = 6,541,250,884/42,014
6. Step 6: Final answer
   x = 155,692.17