Finding the Third Proportional to 65,772 and 144,038.25

Step by Step Solution

1. Step 1: Write the proportion equation
   65,772 : 144,038.25 = 144,038.25 : x
2. Step 2: Convert to fraction form
   65,772/144,038.25 = 144,038.25/x
3. Step 3: Cross multiply
   65,772x = 144,038.25 × 144,038.25
4. Step 4: Simplify right side
   65,772x = 20,747,017,463.06
5. Step 5: Solve for x
   x = 20,747,017,463.06/65,772
6. Step 6: Final answer
   x = 315,438.45