Finding the Third Proportional to 671,680 and 1,419,170

Step by Step Solution

1. Step 1: Write the proportion equation
   671,680 : 1,419,170 = 1,419,170 : x
2. Step 2: Convert to fraction form
   671,680/1,419,170 = 1,419,170/x
3. Step 3: Cross multiply
   671,680x = 1,419,170 × 1,419,170
4. Step 4: Simplify right side
   671,680x = 2,014,043,488,900
5. Step 5: Solve for x
   x = 2,014,043,488,900/671,680
6. Step 6: Final answer
   x = 2,998,516.39