Finding the Third Proportional to 4,659,262 and 9,966,240

Step by Step Solution

1. Step 1: Write the proportion equation
   4,659,262 : 9,966,240 = 9,966,240 : x
2. Step 2: Convert to fraction form
   4,659,262/9,966,240 = 9,966,240/x
3. Step 3: Cross multiply
   4,659,262x = 9,966,240 × 9,966,240
4. Step 4: Simplify right side
   4,659,262x = 99,325,939,737,600
5. Step 5: Solve for x
   x = 99,325,939,737,600/4,659,262
6. Step 6: Final answer
   x = 21,317,955.45