Finding the Third Proportional to 1,687,872 and 2,411,928

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687,872 : 2,411,928 = 2,411,928 : x
2. Step 2: Convert to fraction form
   1,687,872/2,411,928 = 2,411,928/x
3. Step 3: Cross multiply
   1,687,872x = 2,411,928 × 2,411,928
4. Step 4: Simplify right side
   1,687,872x = 5,817,396,677,184
5. Step 5: Solve for x
   x = 5,817,396,677,184/1,687,872
6. Step 6: Final answer
   x = 3,446,586.40