Finding the Third Proportional to 5,090,580 and 10,978,197

Step by Step Solution

1. Step 1: Write the proportion equation
   5,090,580 : 10,978,197 = 10,978,197 : x
2. Step 2: Convert to fraction form
   5,090,580/10,978,197 = 10,978,197/x
3. Step 3: Cross multiply
   5,090,580x = 10,978,197 × 10,978,197
4. Step 4: Simplify right side
   5,090,580x = 120,520,809,370,809
5. Step 5: Solve for x
   x = 120,520,809,370,809/5,090,580
6. Step 6: Final answer
   x = 23,675,260.85