Finding the Third Proportional to 621,318 and 1,333,260

Step by Step Solution

1. Step 1: Write the proportion equation
   621,318 : 1,333,260 = 1,333,260 : x
2. Step 2: Convert to fraction form
   621,318/1,333,260 = 1,333,260/x
3. Step 3: Cross multiply
   621,318x = 1,333,260 × 1,333,260
4. Step 4: Simplify right side
   621,318x = 1,777,582,227,600
5. Step 5: Solve for x
   x = 1,777,582,227,600/621,318
6. Step 6: Final answer
   x = 2,860,986.21