Finding the Third Proportional to 668,385 and 1,443,306

Step by Step Solution

1. Step 1: Write the proportion equation
   668,385 : 1,443,306 = 1,443,306 : x
2. Step 2: Convert to fraction form
   668,385/1,443,306 = 1,443,306/x
3. Step 3: Cross multiply
   668,385x = 1,443,306 × 1,443,306
4. Step 4: Simplify right side
   668,385x = 2,083,132,209,636
5. Step 5: Solve for x
   x = 2,083,132,209,636/668,385
6. Step 6: Final answer
   x = 3,116,665.11