Finding the Third Proportional to 1,854,605 and 3,954,178

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854,605 : 3,954,178 = 3,954,178 : x
2. Step 2: Convert to fraction form
   1,854,605/3,954,178 = 3,954,178/x
3. Step 3: Cross multiply
   1,854,605x = 3,954,178 × 3,954,178
4. Step 4: Simplify right side
   1,854,605x = 15,635,523,655,684
5. Step 5: Solve for x
   x = 15,635,523,655,684/1,854,605
6. Step 6: Final answer
   x = 8,430,648.93