Finding the Third Proportional to 917,576 and 2,159,128

Step by Step Solution

1. Step 1: Write the proportion equation
   917,576 : 2,159,128 = 2,159,128 : x
2. Step 2: Convert to fraction form
   917,576/2,159,128 = 2,159,128/x
3. Step 3: Cross multiply
   917,576x = 2,159,128 × 2,159,128
4. Step 4: Simplify right side
   917,576x = 4,661,833,720,384
5. Step 5: Solve for x
   x = 4,661,833,720,384/917,576
6. Step 6: Final answer
   x = 5,080,596.83