Finding the Third Proportional to 679,240 and 1,476,428

Step by Step Solution

1. Step 1: Write the proportion equation
   679,240 : 1,476,428 = 1,476,428 : x
2. Step 2: Convert to fraction form
   679,240/1,476,428 = 1,476,428/x
3. Step 3: Cross multiply
   679,240x = 1,476,428 × 1,476,428
4. Step 4: Simplify right side
   679,240x = 2,179,839,639,184
5. Step 5: Solve for x
   x = 2,179,839,639,184/679,240
6. Step 6: Final answer
   x = 3,209,233.32