Finding the Third Proportional to 4,201,136 and 9,219,176

Step by Step Solution

1. Step 1: Write the proportion equation
   4,201,136 : 9,219,176 = 9,219,176 : x
2. Step 2: Convert to fraction form
   4,201,136/9,219,176 = 9,219,176/x
3. Step 3: Cross multiply
   4,201,136x = 9,219,176 × 9,219,176
4. Step 4: Simplify right side
   4,201,136x = 84,993,206,118,976
5. Step 5: Solve for x
   x = 84,993,206,118,976/4,201,136
6. Step 6: Final answer
   x = 20,231,005.64