Finding the Third Proportional to 27,345 and 42,839

Step by Step Solution

1. Step 1: Write the proportion equation
   27,345 : 42,839 = 42,839 : x
2. Step 2: Convert to fraction form
   27,345/42,839 = 42,839/x
3. Step 3: Cross multiply
   27,345x = 42,839 × 42,839
4. Step 4: Simplify right side
   27,345x = 1,835,179,921
5. Step 5: Solve for x
   x = 1,835,179,921/27,345
6. Step 6: Final answer
   x = 67,112.08