Finding the Third Proportional to 308,884.50 and 676,818

Step by Step Solution

1. Step 1: Write the proportion equation
   308,884.50 : 676,818 = 676,818 : x
2. Step 2: Convert to fraction form
   308,884.50/676,818 = 676,818/x
3. Step 3: Cross multiply
   308,884.50x = 676,818 × 676,818
4. Step 4: Simplify right side
   308,884.50x = 458,082,605,124
5. Step 5: Solve for x
   x = 458,082,605,124/308,884.50
6. Step 6: Final answer
   x = 1,483,022.31