Finding the Third Proportional to 2,155,378 and 3,381,136

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,378 : 3,381,136 = 3,381,136 : x
2. Step 2: Convert to fraction form
   2,155,378/3,381,136 = 3,381,136/x
3. Step 3: Cross multiply
   2,155,378x = 3,381,136 × 3,381,136
4. Step 4: Simplify right side
   2,155,378x = 11,432,080,650,496
5. Step 5: Solve for x
   x = 11,432,080,650,496/2,155,378
6. Step 6: Final answer
   x = 5,303,979.46