Finding the Third Proportional to 771,078 and 1,670,856

Step by Step Solution

1. Step 1: Write the proportion equation
   771,078 : 1,670,856 = 1,670,856 : x
2. Step 2: Convert to fraction form
   771,078/1,670,856 = 1,670,856/x
3. Step 3: Cross multiply
   771,078x = 1,670,856 × 1,670,856
4. Step 4: Simplify right side
   771,078x = 2,791,759,772,736
5. Step 5: Solve for x
   x = 2,791,759,772,736/771,078
6. Step 6: Final answer
   x = 3,620,593.21