Finding the Third Proportional to 976,572 and 2,139,345

Step by Step Solution

1. Step 1: Write the proportion equation
   976,572 : 2,139,345 = 2,139,345 : x
2. Step 2: Convert to fraction form
   976,572/2,139,345 = 2,139,345/x
3. Step 3: Cross multiply
   976,572x = 2,139,345 × 2,139,345
4. Step 4: Simplify right side
   976,572x = 4,576,797,029,025
5. Step 5: Solve for x
   x = 4,576,797,029,025/976,572
6. Step 6: Final answer
   x = 4,686,594.57