Finding the Third Proportional to 917,518 and 2,158,736

Step by Step Solution

1. Step 1: Write the proportion equation
   917,518 : 2,158,736 = 2,158,736 : x
2. Step 2: Convert to fraction form
   917,518/2,158,736 = 2,158,736/x
3. Step 3: Cross multiply
   917,518x = 2,158,736 × 2,158,736
4. Step 4: Simplify right side
   917,518x = 4,660,141,117,696
5. Step 5: Solve for x
   x = 4,660,141,117,696/917,518
6. Step 6: Final answer
   x = 5,079,073.24