Finding the Third Proportional to 1,438,888 and 2,111,668

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,888 : 2,111,668 = 2,111,668 : x
2. Step 2: Convert to fraction form
   1,438,888/2,111,668 = 2,111,668/x
3. Step 3: Cross multiply
   1,438,888x = 2,111,668 × 2,111,668
4. Step 4: Simplify right side
   1,438,888x = 4,459,141,742,224
5. Step 5: Solve for x
   x = 4,459,141,742,224/1,438,888
6. Step 6: Final answer
   x = 3,099,019.34