Finding the Third Proportional to 1,214,554 and 1,815,136

Step by Step Solution

1. Step 1: Write the proportion equation
   1,214,554 : 1,815,136 = 1,815,136 : x
2. Step 2: Convert to fraction form
   1,214,554/1,815,136 = 1,815,136/x
3. Step 3: Cross multiply
   1,214,554x = 1,815,136 × 1,815,136
4. Step 4: Simplify right side
   1,214,554x = 3,294,718,698,496
5. Step 5: Solve for x
   x = 3,294,718,698,496/1,214,554
6. Step 6: Final answer
   x = 2,712,698.40