Finding the Third Proportional to 9,970,106 and 21,689,812

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970,106 : 21,689,812 = 21,689,812 : x
2. Step 2: Convert to fraction form
   9,970,106/21,689,812 = 21,689,812/x
3. Step 3: Cross multiply
   9,970,106x = 21,689,812 × 21,689,812
4. Step 4: Simplify right side
   9,970,106x = 470,447,944,595,344
5. Step 5: Solve for x
   x = 470,447,944,595,344/9,970,106
6. Step 6: Final answer
   x = 47,185,851.85