Finding the Third Proportional to 4,597,714 and 9,991,256

Step by Step Solution

1. Step 1: Write the proportion equation
   4,597,714 : 9,991,256 = 9,991,256 : x
2. Step 2: Convert to fraction form
   4,597,714/9,991,256 = 9,991,256/x
3. Step 3: Cross multiply
   4,597,714x = 9,991,256 × 9,991,256
4. Step 4: Simplify right side
   4,597,714x = 99,825,196,457,536
5. Step 5: Solve for x
   x = 99,825,196,457,536/4,597,714
6. Step 6: Final answer
   x = 21,711,919.54