Finding the Third Proportional to 620,146 and 1,339,436

Step by Step Solution

1. Step 1: Write the proportion equation
   620,146 : 1,339,436 = 1,339,436 : x
2. Step 2: Convert to fraction form
   620,146/1,339,436 = 1,339,436/x
3. Step 3: Cross multiply
   620,146x = 1,339,436 × 1,339,436
4. Step 4: Simplify right side
   620,146x = 1,794,088,798,096
5. Step 5: Solve for x
   x = 1,794,088,798,096/620,146
6. Step 6: Final answer
   x = 2,893,010.35