Finding the Third Proportional to 886,291.88 and 1,290,686.06

Step by Step Solution

1. Step 1: Write the proportion equation
   886,291.88 : 1,290,686.06 = 1,290,686.06 : x
2. Step 2: Convert to fraction form
   886,291.88/1,290,686.06 = 1,290,686.06/x
3. Step 3: Cross multiply
   886,291.88x = 1,290,686.06 × 1,290,686.06
4. Step 4: Simplify right side
   886,291.88x = 1,665,870,511,931.75
5. Step 5: Solve for x
   x = 1,665,870,511,931.75/886,291.88
6. Step 6: Final answer
   x = 1,879,595.83