Finding the Third Proportional to 518,796 and 1,117,638

Step by Step Solution

1. Step 1: Write the proportion equation
   518,796 : 1,117,638 = 1,117,638 : x
2. Step 2: Convert to fraction form
   518,796/1,117,638 = 1,117,638/x
3. Step 3: Cross multiply
   518,796x = 1,117,638 × 1,117,638
4. Step 4: Simplify right side
   518,796x = 1,249,114,699,044
5. Step 5: Solve for x
   x = 1,249,114,699,044/518,796
6. Step 6: Final answer
   x = 2,407,718.45