Finding the Third Proportional to 64,898 and 143,892

Step by Step Solution

1. Step 1: Write the proportion equation
   64,898 : 143,892 = 143,892 : x
2. Step 2: Convert to fraction form
   64,898/143,892 = 143,892/x
3. Step 3: Cross multiply
   64,898x = 143,892 × 143,892
4. Step 4: Simplify right side
   64,898x = 20,704,907,664
5. Step 5: Solve for x
   x = 20,704,907,664/64,898
6. Step 6: Final answer
   x = 319,037.68