Finding the Third Proportional to 1,615,776 and 3,398,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615,776 : 3,398,688 = 3,398,688 : x
2. Step 2: Convert to fraction form
   1,615,776/3,398,688 = 3,398,688/x
3. Step 3: Cross multiply
   1,615,776x = 3,398,688 × 3,398,688
4. Step 4: Simplify right side
   1,615,776x = 11,551,080,121,344
5. Step 5: Solve for x
   x = 11,551,080,121,344/1,615,776
6. Step 6: Final answer
   x = 7,148,936.56