Finding the Third Proportional to 1,628,603.50 and 3,578,426

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628,603.50 : 3,578,426 = 3,578,426 : x
2. Step 2: Convert to fraction form
   1,628,603.50/3,578,426 = 3,578,426/x
3. Step 3: Cross multiply
   1,628,603.50x = 3,578,426 × 3,578,426
4. Step 4: Simplify right side
   1,628,603.50x = 12,805,132,637,476
5. Step 5: Solve for x
   x = 12,805,132,637,476/1,628,603.50
6. Step 6: Final answer
   x = 7,862,645.90