Finding the Third Proportional to 1,440,400 and 3,146,560

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440,400 : 3,146,560 = 3,146,560 : x
2. Step 2: Convert to fraction form
   1,440,400/3,146,560 = 3,146,560/x
3. Step 3: Cross multiply
   1,440,400x = 3,146,560 × 3,146,560
4. Step 4: Simplify right side
   1,440,400x = 9,900,839,833,600
5. Step 5: Solve for x
   x = 9,900,839,833,600/1,440,400
6. Step 6: Final answer
   x = 6,873,673.86