Finding the Third Proportional to 711,212 and 1,678,884

Step by Step Solution

1. Step 1: Write the proportion equation
   711,212 : 1,678,884 = 1,678,884 : x
2. Step 2: Convert to fraction form
   711,212/1,678,884 = 1,678,884/x
3. Step 3: Cross multiply
   711,212x = 1,678,884 × 1,678,884
4. Step 4: Simplify right side
   711,212x = 2,818,651,485,456
5. Step 5: Solve for x
   x = 2,818,651,485,456/711,212
6. Step 6: Final answer
   x = 3,963,166.38