Finding the Third Proportional to 1,076,988 and 1,689,621

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076,988 : 1,689,621 = 1,689,621 : x
2. Step 2: Convert to fraction form
   1,076,988/1,689,621 = 1,689,621/x
3. Step 3: Cross multiply
   1,076,988x = 1,689,621 × 1,689,621
4. Step 4: Simplify right side
   1,076,988x = 2,854,819,123,641
5. Step 5: Solve for x
   x = 2,854,819,123,641/1,076,988
6. Step 6: Final answer
   x = 2,650,743.67