Finding the Third Proportional to 42,780 and 62,874

Step by Step Solution

1. Step 1: Write the proportion equation
   42,780 : 62,874 = 62,874 : x
2. Step 2: Convert to fraction form
   42,780/62,874 = 62,874/x
3. Step 3: Cross multiply
   42,780x = 62,874 × 62,874
4. Step 4: Simplify right side
   42,780x = 3,953,139,876
5. Step 5: Solve for x
   x = 3,953,139,876/42,780
6. Step 6: Final answer
   x = 92,406.26