Finding the Third Proportional to 65,664 and 143,910

Step by Step Solution

1. Step 1: Write the proportion equation
   65,664 : 143,910 = 143,910 : x
2. Step 2: Convert to fraction form
   65,664/143,910 = 143,910/x
3. Step 3: Cross multiply
   65,664x = 143,910 × 143,910
4. Step 4: Simplify right side
   65,664x = 20,710,088,100
5. Step 5: Solve for x
   x = 20,710,088,100/65,664
6. Step 6: Final answer
   x = 315,394.86