Finding the Third Proportional to 621,036 and 1,264,910

Step by Step Solution

1. Step 1: Write the proportion equation
   621,036 : 1,264,910 = 1,264,910 : x
2. Step 2: Convert to fraction form
   621,036/1,264,910 = 1,264,910/x
3. Step 3: Cross multiply
   621,036x = 1,264,910 × 1,264,910
4. Step 4: Simplify right side
   621,036x = 1,599,997,308,100
5. Step 5: Solve for x
   x = 1,599,997,308,100/621,036
6. Step 6: Final answer
   x = 2,576,335.85