Finding the Third Proportional to 621,665 and 1,333,938

Step by Step Solution

1. Step 1: Write the proportion equation
   621,665 : 1,333,938 = 1,333,938 : x
2. Step 2: Convert to fraction form
   621,665/1,333,938 = 1,333,938/x
3. Step 3: Cross multiply
   621,665x = 1,333,938 × 1,333,938
4. Step 4: Simplify right side
   621,665x = 1,779,390,587,844
5. Step 5: Solve for x
   x = 1,779,390,587,844/621,665
6. Step 6: Final answer
   x = 2,862,298.16