Finding the Third Proportional to 4,659,256 and 9,966,228

Step by Step Solution

1. Step 1: Write the proportion equation
   4,659,256 : 9,966,228 = 9,966,228 : x
2. Step 2: Convert to fraction form
   4,659,256/9,966,228 = 9,966,228/x
3. Step 3: Cross multiply
   4,659,256x = 9,966,228 × 9,966,228
4. Step 4: Simplify right side
   4,659,256x = 99,325,700,547,984
5. Step 5: Solve for x
   x = 99,325,700,547,984/4,659,256
6. Step 6: Final answer
   x = 21,317,931.56