Finding the Third Proportional to 677,698 and 1,411,580

Step by Step Solution

1. Step 1: Write the proportion equation
   677,698 : 1,411,580 = 1,411,580 : x
2. Step 2: Convert to fraction form
   677,698/1,411,580 = 1,411,580/x
3. Step 3: Cross multiply
   677,698x = 1,411,580 × 1,411,580
4. Step 4: Simplify right side
   677,698x = 1,992,558,096,400
5. Step 5: Solve for x
   x = 1,992,558,096,400/677,698
6. Step 6: Final answer
   x = 2,940,185.89