Finding the Third Proportional to 1,076,991 and 1,689,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076,991 : 1,689,622.50 = 1,689,622.50 : x
2. Step 2: Convert to fraction form
   1,076,991/1,689,622.50 = 1,689,622.50/x
3. Step 3: Cross multiply
   1,076,991x = 1,689,622.50 × 1,689,622.50
4. Step 4: Simplify right side
   1,076,991x = 2,854,824,192,506.25
5. Step 5: Solve for x
   x = 2,854,824,192,506.25/1,076,991
6. Step 6: Final answer
   x = 2,650,740.99