Finding the Third Proportional to 2,658,396 and 5,831,421

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658,396 : 5,831,421 = 5,831,421 : x
2. Step 2: Convert to fraction form
   2,658,396/5,831,421 = 5,831,421/x
3. Step 3: Cross multiply
   2,658,396x = 5,831,421 × 5,831,421
4. Step 4: Simplify right side
   2,658,396x = 34,005,470,879,241
5. Step 5: Solve for x
   x = 34,005,470,879,241/2,658,396
6. Step 6: Final answer
   x = 12,791,725.12