Finding the Third Proportional to 4,659,258 and 9,966,234

Step by Step Solution

1. Step 1: Write the proportion equation
   4,659,258 : 9,966,234 = 9,966,234 : x
2. Step 2: Convert to fraction form
   4,659,258/9,966,234 = 9,966,234/x
3. Step 3: Cross multiply
   4,659,258x = 9,966,234 × 9,966,234
4. Step 4: Simplify right side
   4,659,258x = 99,325,820,142,756
5. Step 5: Solve for x
   x = 99,325,820,142,756/4,659,258
6. Step 6: Final answer
   x = 21,317,948.08