Finding the Third Proportional to 10,012,418 and 21,442,012

Step by Step Solution

1. Step 1: Write the proportion equation
   10,012,418 : 21,442,012 = 21,442,012 : x
2. Step 2: Convert to fraction form
   10,012,418/21,442,012 = 21,442,012/x
3. Step 3: Cross multiply
   10,012,418x = 21,442,012 × 21,442,012
4. Step 4: Simplify right side
   10,012,418x = 459,759,878,608,144
5. Step 5: Solve for x
   x = 459,759,878,608,144/10,012,418
6. Step 6: Final answer
   x = 45,918,965.69