Finding the Third Proportional to 978,674 and 1,430,245

Step by Step Solution

1. Step 1: Write the proportion equation
   978,674 : 1,430,245 = 1,430,245 : x
2. Step 2: Convert to fraction form
   978,674/1,430,245 = 1,430,245/x
3. Step 3: Cross multiply
   978,674x = 1,430,245 × 1,430,245
4. Step 4: Simplify right side
   978,674x = 2,045,600,760,025
5. Step 5: Solve for x
   x = 2,045,600,760,025/978,674
6. Step 6: Final answer
   x = 2,090,175.85