Finding the Third Proportional to 858,161 and 1,851,210

Step by Step Solution

1. Step 1: Write the proportion equation
   858,161 : 1,851,210 = 1,851,210 : x
2. Step 2: Convert to fraction form
   858,161/1,851,210 = 1,851,210/x
3. Step 3: Cross multiply
   858,161x = 1,851,210 × 1,851,210
4. Step 4: Simplify right side
   858,161x = 3,426,978,464,100
5. Step 5: Solve for x
   x = 3,426,978,464,100/858,161
6. Step 6: Final answer
   x = 3,993,398.05