Finding the Third Proportional to 1,205,813 and 1,919,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205,813 : 1,919,420 = 1,919,420 : x
2. Step 2: Convert to fraction form
   1,205,813/1,919,420 = 1,919,420/x
3. Step 3: Cross multiply
   1,205,813x = 1,919,420 × 1,919,420
4. Step 4: Simplify right side
   1,205,813x = 3,684,173,136,400
5. Step 5: Solve for x
   x = 3,684,173,136,400/1,205,813
6. Step 6: Final answer
   x = 3,055,343.69