Finding the Third Proportional to 621,846 and 1,359,612

Step by Step Solution

1. Step 1: Write the proportion equation
   621,846 : 1,359,612 = 1,359,612 : x
2. Step 2: Convert to fraction form
   621,846/1,359,612 = 1,359,612/x
3. Step 3: Cross multiply
   621,846x = 1,359,612 × 1,359,612
4. Step 4: Simplify right side
   621,846x = 1,848,544,790,544
5. Step 5: Solve for x
   x = 1,848,544,790,544/621,846
6. Step 6: Final answer
   x = 2,972,672.96