Finding the Third Proportional to 140,239 and 308,524.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,239 : 308,524.50 = 308,524.50 : x
2. Step 2: Convert to fraction form
   140,239/308,524.50 = 308,524.50/x
3. Step 3: Cross multiply
   140,239x = 308,524.50 × 308,524.50
4. Step 4: Simplify right side
   140,239x = 95,187,367,100.25
5. Step 5: Solve for x
   x = 95,187,367,100.25/140,239
6. Step 6: Final answer
   x = 678,751.04