Finding the Third Proportional to 1,628,611 and 3,578,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628,611 : 3,578,440 = 3,578,440 : x
2. Step 2: Convert to fraction form
   1,628,611/3,578,440 = 3,578,440/x
3. Step 3: Cross multiply
   1,628,611x = 3,578,440 × 3,578,440
4. Step 4: Simplify right side
   1,628,611x = 12,805,232,833,600
5. Step 5: Solve for x
   x = 12,805,232,833,600/1,628,611
6. Step 6: Final answer
   x = 7,862,671.22