Finding the Third Proportional to 10,012,420 and 21,442,016

Step by Step Solution

1. Step 1: Write the proportion equation
   10,012,420 : 21,442,016 = 21,442,016 : x
2. Step 2: Convert to fraction form
   10,012,420/21,442,016 = 21,442,016/x
3. Step 3: Cross multiply
   10,012,420x = 21,442,016 × 21,442,016
4. Step 4: Simplify right side
   10,012,420x = 459,760,050,144,256
5. Step 5: Solve for x
   x = 459,760,050,144,256/10,012,420
6. Step 6: Final answer
   x = 45,918,973.65