Finding the Third Proportional to 637,290 and 1,379,142

Step by Step Solution

1. Step 1: Write the proportion equation
   637,290 : 1,379,142 = 1,379,142 : x
2. Step 2: Convert to fraction form
   637,290/1,379,142 = 1,379,142/x
3. Step 3: Cross multiply
   637,290x = 1,379,142 × 1,379,142
4. Step 4: Simplify right side
   637,290x = 1,902,032,656,164
5. Step 5: Solve for x
   x = 1,902,032,656,164/637,290
6. Step 6: Final answer
   x = 2,984,563.79