Finding the Third Proportional to 887,770 and 1,391,155

Step by Step Solution

1. Step 1: Write the proportion equation
   887,770 : 1,391,155 = 1,391,155 : x
2. Step 2: Convert to fraction form
   887,770/1,391,155 = 1,391,155/x
3. Step 3: Cross multiply
   887,770x = 1,391,155 × 1,391,155
4. Step 4: Simplify right side
   887,770x = 1,935,312,234,025
5. Step 5: Solve for x
   x = 1,935,312,234,025/887,770
6. Step 6: Final answer
   x = 2,179,970.30