Finding the Third Proportional to 42,680 and 67,863

Step by Step Solution

1. Step 1: Write the proportion equation
   42,680 : 67,863 = 67,863 : x
2. Step 2: Convert to fraction form
   42,680/67,863 = 67,863/x
3. Step 3: Cross multiply
   42,680x = 67,863 × 67,863
4. Step 4: Simplify right side
   42,680x = 4,605,386,769
5. Step 5: Solve for x
   x = 4,605,386,769/42,680
6. Step 6: Final answer
   x = 107,905.03