Finding the Third Proportional to 4,221,410 and 9,955,256

Step by Step Solution

1. Step 1: Write the proportion equation
   4,221,410 : 9,955,256 = 9,955,256 : x
2. Step 2: Convert to fraction form
   4,221,410/9,955,256 = 9,955,256/x
3. Step 3: Cross multiply
   4,221,410x = 9,955,256 × 9,955,256
4. Step 4: Simplify right side
   4,221,410x = 99,107,122,025,536
5. Step 5: Solve for x
   x = 99,107,122,025,536/4,221,410
6. Step 6: Final answer
   x = 23,477,255.71