Finding the Third Proportional to 684,666 and 1,390,068

Step by Step Solution

1. Step 1: Write the proportion equation
   684,666 : 1,390,068 = 1,390,068 : x
2. Step 2: Convert to fraction form
   684,666/1,390,068 = 1,390,068/x
3. Step 3: Cross multiply
   684,666x = 1,390,068 × 1,390,068
4. Step 4: Simplify right side
   684,666x = 1,932,289,044,624
5. Step 5: Solve for x
   x = 1,932,289,044,624/684,666
6. Step 6: Final answer
   x = 2,822,236.02