Finding the Third Proportional to 857,870 and 1,694,210

Step by Step Solution

1. Step 1: Write the proportion equation
   857,870 : 1,694,210 = 1,694,210 : x
2. Step 2: Convert to fraction form
   857,870/1,694,210 = 1,694,210/x
3. Step 3: Cross multiply
   857,870x = 1,694,210 × 1,694,210
4. Step 4: Simplify right side
   857,870x = 2,870,347,524,100
5. Step 5: Solve for x
   x = 2,870,347,524,100/857,870
6. Step 6: Final answer
   x = 3,345,900.34