Finding the Third Proportional to 27,009 and 42,930

Step by Step Solution

1. Step 1: Write the proportion equation
   27,009 : 42,930 = 42,930 : x
2. Step 2: Convert to fraction form
   27,009/42,930 = 42,930/x
3. Step 3: Cross multiply
   27,009x = 42,930 × 42,930
4. Step 4: Simplify right side
   27,009x = 1,842,984,900
5. Step 5: Solve for x
   x = 1,842,984,900/27,009
6. Step 6: Final answer
   x = 68,235.95