Finding the Third Proportional to 2,131,144 and 4,564,580

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131,144 : 4,564,580 = 4,564,580 : x
2. Step 2: Convert to fraction form
   2,131,144/4,564,580 = 4,564,580/x
3. Step 3: Cross multiply
   2,131,144x = 4,564,580 × 4,564,580
4. Step 4: Simplify right side
   2,131,144x = 20,835,390,576,400
5. Step 5: Solve for x
   x = 20,835,390,576,400/2,131,144
6. Step 6: Final answer
   x = 9,776,622.59