Finding the Third Proportional to 5,429,754 and 10,722,456

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429,754 : 10,722,456 = 10,722,456 : x
2. Step 2: Convert to fraction form
   5,429,754/10,722,456 = 10,722,456/x
3. Step 3: Cross multiply
   5,429,754x = 10,722,456 × 10,722,456
4. Step 4: Simplify right side
   5,429,754x = 114,971,062,671,936
5. Step 5: Solve for x
   x = 114,971,062,671,936/5,429,754
6. Step 6: Final answer
   x = 21,174,267.32