Finding the Third Proportional to 917,574 and 2,159,123

Step by Step Solution

1. Step 1: Write the proportion equation
   917,574 : 2,159,123 = 2,159,123 : x
2. Step 2: Convert to fraction form
   917,574/2,159,123 = 2,159,123/x
3. Step 3: Cross multiply
   917,574x = 2,159,123 × 2,159,123
4. Step 4: Simplify right side
   917,574x = 4,661,812,129,129
5. Step 5: Solve for x
   x = 4,661,812,129,129/917,574
6. Step 6: Final answer
   x = 5,080,584.38