Finding the Third Proportional to 1,428,528 and 2,161,224

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,528 : 2,161,224 = 2,161,224 : x
2. Step 2: Convert to fraction form
   1,428,528/2,161,224 = 2,161,224/x
3. Step 3: Cross multiply
   1,428,528x = 2,161,224 × 2,161,224
4. Step 4: Simplify right side
   1,428,528x = 4,670,889,178,176
5. Step 5: Solve for x
   x = 4,670,889,178,176/1,428,528
6. Step 6: Final answer
   x = 3,269,721.82