Finding the Third Proportional to 144,931.50 and 309,765

Step by Step Solution

1. Step 1: Write the proportion equation
   144,931.50 : 309,765 = 309,765 : x
2. Step 2: Convert to fraction form
   144,931.50/309,765 = 309,765/x
3. Step 3: Cross multiply
   144,931.50x = 309,765 × 309,765
4. Step 4: Simplify right side
   144,931.50x = 95,954,355,225
5. Step 5: Solve for x
   x = 95,954,355,225/144,931.50
6. Step 6: Final answer
   x = 662,066.94