Finding the Third Proportional to 1,214,546 and 1,815,126

Step by Step Solution

1. Step 1: Write the proportion equation
   1,214,546 : 1,815,126 = 1,815,126 : x
2. Step 2: Convert to fraction form
   1,214,546/1,815,126 = 1,815,126/x
3. Step 3: Cross multiply
   1,214,546x = 1,815,126 × 1,815,126
4. Step 4: Simplify right side
   1,214,546x = 3,294,682,395,876
5. Step 5: Solve for x
   x = 3,294,682,395,876/1,214,546
6. Step 6: Final answer
   x = 2,712,686.38