Finding the Third Proportional to 621,664 and 1,333,936

Step by Step Solution

1. Step 1: Write the proportion equation
   621,664 : 1,333,936 = 1,333,936 : x
2. Step 2: Convert to fraction form
   621,664/1,333,936 = 1,333,936/x
3. Step 3: Cross multiply
   621,664x = 1,333,936 × 1,333,936
4. Step 4: Simplify right side
   621,664x = 1,779,385,252,096
5. Step 5: Solve for x
   x = 1,779,385,252,096/621,664
6. Step 6: Final answer
   x = 2,862,294.18