Finding the Third Proportional to 678,969 and 1,488,510

Step by Step Solution

1. Step 1: Write the proportion equation
   678,969 : 1,488,510 = 1,488,510 : x
2. Step 2: Convert to fraction form
   678,969/1,488,510 = 1,488,510/x
3. Step 3: Cross multiply
   678,969x = 1,488,510 × 1,488,510
4. Step 4: Simplify right side
   678,969x = 2,215,662,020,100
5. Step 5: Solve for x
   x = 2,215,662,020,100/678,969
6. Step 6: Final answer
   x = 3,263,274.20