Finding the Third Proportional to 791,078 and 1,638,196

Step by Step Solution

1. Step 1: Write the proportion equation
   791,078 : 1,638,196 = 1,638,196 : x
2. Step 2: Convert to fraction form
   791,078/1,638,196 = 1,638,196/x
3. Step 3: Cross multiply
   791,078x = 1,638,196 × 1,638,196
4. Step 4: Simplify right side
   791,078x = 2,683,686,134,416
5. Step 5: Solve for x
   x = 2,683,686,134,416/791,078
6. Step 6: Final answer
   x = 3,392,441.88