Finding the Third Proportional to 518,798 and 1,117,642

Step by Step Solution

1. Step 1: Write the proportion equation
   518,798 : 1,117,642 = 1,117,642 : x
2. Step 2: Convert to fraction form
   518,798/1,117,642 = 1,117,642/x
3. Step 3: Cross multiply
   518,798x = 1,117,642 × 1,117,642
4. Step 4: Simplify right side
   518,798x = 1,249,123,640,164
5. Step 5: Solve for x
   x = 1,249,123,640,164/518,798
6. Step 6: Final answer
   x = 2,407,726.40