Finding the Third Proportional to 14,178 and 30,819

Step by Step Solution

1. Step 1: Write the proportion equation
   14,178 : 30,819 = 30,819 : x
2. Step 2: Convert to fraction form
   14,178/30,819 = 30,819/x
3. Step 3: Cross multiply
   14,178x = 30,819 × 30,819
4. Step 4: Simplify right side
   14,178x = 949,810,761
5. Step 5: Solve for x
   x = 949,810,761/14,178
6. Step 6: Final answer
   x = 66,991.87