Finding the Third Proportional to 917,570 and 2,158,844

Step by Step Solution

1. Step 1: Write the proportion equation
   917,570 : 2,158,844 = 2,158,844 : x
2. Step 2: Convert to fraction form
   917,570/2,158,844 = 2,158,844/x
3. Step 3: Cross multiply
   917,570x = 2,158,844 × 2,158,844
4. Step 4: Simplify right side
   917,570x = 4,660,607,416,336
5. Step 5: Solve for x
   x = 4,660,607,416,336/917,570
6. Step 6: Final answer
   x = 5,079,293.59