Finding the Third Proportional to 308,838.50 and 666,884

Step by Step Solution

1. Step 1: Write the proportion equation
   308,838.50 : 666,884 = 666,884 : x
2. Step 2: Convert to fraction form
   308,838.50/666,884 = 666,884/x
3. Step 3: Cross multiply
   308,838.50x = 666,884 × 666,884
4. Step 4: Simplify right side
   308,838.50x = 444,734,269,456
5. Step 5: Solve for x
   x = 444,734,269,456/308,838.50
6. Step 6: Final answer
   x = 1,440,022.11