Finding the Third Proportional to 1,440,396 and 3,146,553

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440,396 : 3,146,553 = 3,146,553 : x
2. Step 2: Convert to fraction form
   1,440,396/3,146,553 = 3,146,553/x
3. Step 3: Cross multiply
   1,440,396x = 3,146,553 × 3,146,553
4. Step 4: Simplify right side
   1,440,396x = 9,900,795,781,809
5. Step 5: Solve for x
   x = 9,900,795,781,809/1,440,396
6. Step 6: Final answer
   x = 6,873,662.37