Finding the Third Proportional to 857,139 and 1,809,702

Step by Step Solution

1. Step 1: Write the proportion equation
   857,139 : 1,809,702 = 1,809,702 : x
2. Step 2: Convert to fraction form
   857,139/1,809,702 = 1,809,702/x
3. Step 3: Cross multiply
   857,139x = 1,809,702 × 1,809,702
4. Step 4: Simplify right side
   857,139x = 3,275,021,328,804
5. Step 5: Solve for x
   x = 3,275,021,328,804/857,139
6. Step 6: Final answer
   x = 3,820,875.41