Finding the Third Proportional to 621,294 and 1,358,886

Step by Step Solution

1. Step 1: Write the proportion equation
   621,294 : 1,358,886 = 1,358,886 : x
2. Step 2: Convert to fraction form
   621,294/1,358,886 = 1,358,886/x
3. Step 3: Cross multiply
   621,294x = 1,358,886 × 1,358,886
4. Step 4: Simplify right side
   621,294x = 1,846,571,160,996
5. Step 5: Solve for x
   x = 1,846,571,160,996/621,294
6. Step 6: Final answer
   x = 2,972,137.44