Finding the Third Proportional to 854,390 and 1,819,210

Step by Step Solution

1. Step 1: Write the proportion equation
   854,390 : 1,819,210 = 1,819,210 : x
2. Step 2: Convert to fraction form
   854,390/1,819,210 = 1,819,210/x
3. Step 3: Cross multiply
   854,390x = 1,819,210 × 1,819,210
4. Step 4: Simplify right side
   854,390x = 3,309,525,024,100
5. Step 5: Solve for x
   x = 3,309,525,024,100/854,390
6. Step 6: Final answer
   x = 3,873,553.09