Finding the Third Proportional to 65,362 and 143,172

Step by Step Solution

1. Step 1: Write the proportion equation
   65,362 : 143,172 = 143,172 : x
2. Step 2: Convert to fraction form
   65,362/143,172 = 143,172/x
3. Step 3: Cross multiply
   65,362x = 143,172 × 143,172
4. Step 4: Simplify right side
   65,362x = 20,498,221,584
5. Step 5: Solve for x
   x = 20,498,221,584/65,362
6. Step 6: Final answer
   x = 313,610.68