Finding the Third Proportional to 56,812 and 123,878

Step by Step Solution

1. Step 1: Write the proportion equation
   56,812 : 123,878 = 123,878 : x
2. Step 2: Convert to fraction form
   56,812/123,878 = 123,878/x
3. Step 3: Cross multiply
   56,812x = 123,878 × 123,878
4. Step 4: Simplify right side
   56,812x = 15,345,758,884
5. Step 5: Solve for x
   x = 15,345,758,884/56,812
6. Step 6: Final answer
   x = 270,114.74