Finding the Third Proportional to 21,918 and 50,178

Step by Step Solution

1. Step 1: Write the proportion equation
   21,918 : 50,178 = 50,178 : x
2. Step 2: Convert to fraction form
   21,918/50,178 = 50,178/x
3. Step 3: Cross multiply
   21,918x = 50,178 × 50,178
4. Step 4: Simplify right side
   21,918x = 2,517,831,684
5. Step 5: Solve for x
   x = 2,517,831,684/21,918
6. Step 6: Final answer
   x = 114,875.07