Finding the Third Proportional to 27,387 and 42,288

Step by Step Solution

1. Step 1: Write the proportion equation
   27,387 : 42,288 = 42,288 : x
2. Step 2: Convert to fraction form
   27,387/42,288 = 42,288/x
3. Step 3: Cross multiply
   27,387x = 42,288 × 42,288
4. Step 4: Simplify right side
   27,387x = 1,788,274,944
5. Step 5: Solve for x
   x = 1,788,274,944/27,387
6. Step 6: Final answer
   x = 65,296.49