Finding the Third Proportional to 671,778 and 1,419,388

Step by Step Solution

1. Step 1: Write the proportion equation
   671,778 : 1,419,388 = 1,419,388 : x
2. Step 2: Convert to fraction form
   671,778/1,419,388 = 1,419,388/x
3. Step 3: Cross multiply
   671,778x = 1,419,388 × 1,419,388
4. Step 4: Simplify right side
   671,778x = 2,014,662,294,544
5. Step 5: Solve for x
   x = 2,014,662,294,544/671,778
6. Step 6: Final answer
   x = 2,999,000.11