Finding the Third Proportional to 143,070.50 and 308,285

Step by Step Solution

1. Step 1: Write the proportion equation
   143,070.50 : 308,285 = 308,285 : x
2. Step 2: Convert to fraction form
   143,070.50/308,285 = 308,285/x
3. Step 3: Cross multiply
   143,070.50x = 308,285 × 308,285
4. Step 4: Simplify right side
   143,070.50x = 95,039,641,225
5. Step 5: Solve for x
   x = 95,039,641,225/143,070.50
6. Step 6: Final answer
   x = 664,285.38