Finding the Third Proportional to 711,268 and 1,678,930

Step by Step Solution

1. Step 1: Write the proportion equation
   711,268 : 1,678,930 = 1,678,930 : x
2. Step 2: Convert to fraction form
   711,268/1,678,930 = 1,678,930/x
3. Step 3: Cross multiply
   711,268x = 1,678,930 × 1,678,930
4. Step 4: Simplify right side
   711,268x = 2,818,805,944,900
5. Step 5: Solve for x
   x = 2,818,805,944,900/711,268
6. Step 6: Final answer
   x = 3,963,071.51