Finding the Third Proportional to 9,842,666 and 21,621,124

Step by Step Solution

1. Step 1: Write the proportion equation
   9,842,666 : 21,621,124 = 21,621,124 : x
2. Step 2: Convert to fraction form
   9,842,666/21,621,124 = 21,621,124/x
3. Step 3: Cross multiply
   9,842,666x = 21,621,124 × 21,621,124
4. Step 4: Simplify right side
   9,842,666x = 467,473,003,023,376
5. Step 5: Solve for x
   x = 467,473,003,023,376/9,842,666
6. Step 6: Final answer
   x = 47,494,551.07