Finding the Third Proportional to 27,139 and 42,017

Step by Step Solution

1. Step 1: Write the proportion equation
   27,139 : 42,017 = 42,017 : x
2. Step 2: Convert to fraction form
   27,139/42,017 = 42,017/x
3. Step 3: Cross multiply
   27,139x = 42,017 × 42,017
4. Step 4: Simplify right side
   27,139x = 1,765,428,289
5. Step 5: Solve for x
   x = 1,765,428,289/27,139
6. Step 6: Final answer
   x = 65,051.34