Finding the Third Proportional to 815,564 and 1,919,045

Step by Step Solution

1. Step 1: Write the proportion equation
   815,564 : 1,919,045 = 1,919,045 : x
2. Step 2: Convert to fraction form
   815,564/1,919,045 = 1,919,045/x
3. Step 3: Cross multiply
   815,564x = 1,919,045 × 1,919,045
4. Step 4: Simplify right side
   815,564x = 3,682,733,712,025
5. Step 5: Solve for x
   x = 3,682,733,712,025/815,564
6. Step 6: Final answer
   x = 4,515,566.79