Finding the Third Proportional to 3,405,681 and 5,122,872

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,681 : 5,122,872 = 5,122,872 : x
2. Step 2: Convert to fraction form
   3,405,681/5,122,872 = 5,122,872/x
3. Step 3: Cross multiply
   3,405,681x = 5,122,872 × 5,122,872
4. Step 4: Simplify right side
   3,405,681x = 26,243,817,528,384
5. Step 5: Solve for x
   x = 26,243,817,528,384/3,405,681
6. Step 6: Final answer
   x = 7,705,894.22