Finding the Third Proportional to 799,863 and 1,689,654

Step by Step Solution

1. Step 1: Write the proportion equation
   799,863 : 1,689,654 = 1,689,654 : x
2. Step 2: Convert to fraction form
   799,863/1,689,654 = 1,689,654/x
3. Step 3: Cross multiply
   799,863x = 1,689,654 × 1,689,654
4. Step 4: Simplify right side
   799,863x = 2,854,930,639,716
5. Step 5: Solve for x
   x = 2,854,930,639,716/799,863
6. Step 6: Final answer
   x = 3,569,274.54