Finding the Third Proportional to 65,580 and 143,472

Step by Step Solution

1. Step 1: Write the proportion equation
   65,580 : 143,472 = 143,472 : x
2. Step 2: Convert to fraction form
   65,580/143,472 = 143,472/x
3. Step 3: Cross multiply
   65,580x = 143,472 × 143,472
4. Step 4: Simplify right side
   65,580x = 20,584,214,784
5. Step 5: Solve for x
   x = 20,584,214,784/65,580
6. Step 6: Final answer
   x = 313,879.46