Finding the Third Proportional to 1,615,644 and 3,398,424

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615,644 : 3,398,424 = 3,398,424 : x
2. Step 2: Convert to fraction form
   1,615,644/3,398,424 = 3,398,424/x
3. Step 3: Cross multiply
   1,615,644x = 3,398,424 × 3,398,424
4. Step 4: Simplify right side
   1,615,644x = 11,549,285,683,776
5. Step 5: Solve for x
   x = 11,549,285,683,776/1,615,644
6. Step 6: Final answer
   x = 7,148,409.97