Finding the Third Proportional to 3,405,178 and 5,078,238

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,178 : 5,078,238 = 5,078,238 : x
2. Step 2: Convert to fraction form
   3,405,178/5,078,238 = 5,078,238/x
3. Step 3: Cross multiply
   3,405,178x = 5,078,238 × 5,078,238
4. Step 4: Simplify right side
   3,405,178x = 25,788,501,184,644
5. Step 5: Solve for x
   x = 25,788,501,184,644/3,405,178
6. Step 6: Final answer
   x = 7,573,319.57