Finding the Third Proportional to 61,978 and 133,892

Step by Step Solution

1. Step 1: Write the proportion equation
   61,978 : 133,892 = 133,892 : x
2. Step 2: Convert to fraction form
   61,978/133,892 = 133,892/x
3. Step 3: Cross multiply
   61,978x = 133,892 × 133,892
4. Step 4: Simplify right side
   61,978x = 17,927,067,664
5. Step 5: Solve for x
   x = 17,927,067,664/61,978
6. Step 6: Final answer
   x = 289,248.89