Finding the Third Proportional to 878,447 and 1,918,003

Step by Step Solution

1. Step 1: Write the proportion equation
   878,447 : 1,918,003 = 1,918,003 : x
2. Step 2: Convert to fraction form
   878,447/1,918,003 = 1,918,003/x
3. Step 3: Cross multiply
   878,447x = 1,918,003 × 1,918,003
4. Step 4: Simplify right side
   878,447x = 3,678,735,508,009
5. Step 5: Solve for x
   x = 3,678,735,508,009/878,447
6. Step 6: Final answer
   x = 4,187,771.72