Finding the Third Proportional to 888,663 and 1,269,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   888,663 : 1,269,899.50 = 1,269,899.50 : x
2. Step 2: Convert to fraction form
   888,663/1,269,899.50 = 1,269,899.50/x
3. Step 3: Cross multiply
   888,663x = 1,269,899.50 × 1,269,899.50
4. Step 4: Simplify right side
   888,663x = 1,612,644,740,100.25
5. Step 5: Solve for x
   x = 1,612,644,740,100.25/888,663
6. Step 6: Final answer
   x = 1,814,686.49