Finding the Third Proportional to 38,814 and 54,930

Step by Step Solution

1. Step 1: Write the proportion equation
   38,814 : 54,930 = 54,930 : x
2. Step 2: Convert to fraction form
   38,814/54,930 = 54,930/x
3. Step 3: Cross multiply
   38,814x = 54,930 × 54,930
4. Step 4: Simplify right side
   38,814x = 3,017,304,900
5. Step 5: Solve for x
   x = 3,017,304,900/38,814
6. Step 6: Final answer
   x = 77,737.54