Finding the Third Proportional to 9,970,146 and 21,689,892

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970,146 : 21,689,892 = 21,689,892 : x
2. Step 2: Convert to fraction form
   9,970,146/21,689,892 = 21,689,892/x
3. Step 3: Cross multiply
   9,970,146x = 21,689,892 × 21,689,892
4. Step 4: Simplify right side
   9,970,146x = 470,451,414,971,664
5. Step 5: Solve for x
   x = 470,451,414,971,664/9,970,146
6. Step 6: Final answer
   x = 47,186,010.61