Finding the Third Proportional to 308,888 and 676,826

Step by Step Solution

1. Step 1: Write the proportion equation
   308,888 : 676,826 = 676,826 : x
2. Step 2: Convert to fraction form
   308,888/676,826 = 676,826/x
3. Step 3: Cross multiply
   308,888x = 676,826 × 676,826
4. Step 4: Simplify right side
   308,888x = 458,093,434,276
5. Step 5: Solve for x
   x = 458,093,434,276/308,888
6. Step 6: Final answer
   x = 1,483,040.57