Finding the Third Proportional to 887,760 and 1,391,139

Step by Step Solution

1. Step 1: Write the proportion equation
   887,760 : 1,391,139 = 1,391,139 : x
2. Step 2: Convert to fraction form
   887,760/1,391,139 = 1,391,139/x
3. Step 3: Cross multiply
   887,760x = 1,391,139 × 1,391,139
4. Step 4: Simplify right side
   887,760x = 1,935,267,717,321
5. Step 5: Solve for x
   x = 1,935,267,717,321/887,760
6. Step 6: Final answer
   x = 2,179,944.71