Finding the Third Proportional to 65,778.75 and 144,677.25

Step by Step Solution

1. Step 1: Write the proportion equation
   65,778.75 : 144,677.25 = 144,677.25 : x
2. Step 2: Convert to fraction form
   65,778.75/144,677.25 = 144,677.25/x
3. Step 3: Cross multiply
   65,778.75x = 144,677.25 × 144,677.25
4. Step 4: Simplify right side
   65,778.75x = 20,931,506,667.56
5. Step 5: Solve for x
   x = 20,931,506,667.56/65,778.75
6. Step 6: Final answer
   x = 318,210.77