Finding the Third Proportional to 1,205,815 and 1,919,423

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205,815 : 1,919,423 = 1,919,423 : x
2. Step 2: Convert to fraction form
   1,205,815/1,919,423 = 1,919,423/x
3. Step 3: Cross multiply
   1,205,815x = 1,919,423 × 1,919,423
4. Step 4: Simplify right side
   1,205,815x = 3,684,184,652,929
5. Step 5: Solve for x
   x = 3,684,184,652,929/1,205,815
6. Step 6: Final answer
   x = 3,055,348.17