Finding the Third Proportional to 3,213,288 and 4,643,028

Step by Step Solution

1. Step 1: Write the proportion equation
   3,213,288 : 4,643,028 = 4,643,028 : x
2. Step 2: Convert to fraction form
   3,213,288/4,643,028 = 4,643,028/x
3. Step 3: Cross multiply
   3,213,288x = 4,643,028 × 4,643,028
4. Step 4: Simplify right side
   3,213,288x = 21,557,709,008,784
5. Step 5: Solve for x
   x = 21,557,709,008,784/3,213,288
6. Step 6: Final answer
   x = 6,708,925.25