Finding the Third Proportional to 307,003.50 and 629,208

Step by Step Solution

1. Step 1: Write the proportion equation
   307,003.50 : 629,208 = 629,208 : x
2. Step 2: Convert to fraction form
   307,003.50/629,208 = 629,208/x
3. Step 3: Cross multiply
   307,003.50x = 629,208 × 629,208
4. Step 4: Simplify right side
   307,003.50x = 395,902,707,264
5. Step 5: Solve for x
   x = 395,902,707,264/307,003.50
6. Step 6: Final answer
   x = 1,289,570.66