Finding the Third Proportional to 663,318 and 1,559,286

Step by Step Solution

1. Step 1: Write the proportion equation
   663,318 : 1,559,286 = 1,559,286 : x
2. Step 2: Convert to fraction form
   663,318/1,559,286 = 1,559,286/x
3. Step 3: Cross multiply
   663,318x = 1,559,286 × 1,559,286
4. Step 4: Simplify right side
   663,318x = 2,431,372,829,796
5. Step 5: Solve for x
   x = 2,431,372,829,796/663,318
6. Step 6: Final answer
   x = 3,665,470.91