Finding the Third Proportional to 9,970,189 and 21,641,968

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970,189 : 21,641,968 = 21,641,968 : x
2. Step 2: Convert to fraction form
   9,970,189/21,641,968 = 21,641,968/x
3. Step 3: Cross multiply
   9,970,189x = 21,641,968 × 21,641,968
4. Step 4: Simplify right side
   9,970,189x = 468,374,778,913,024
5. Step 5: Solve for x
   x = 468,374,778,913,024/9,970,189
6. Step 6: Final answer
   x = 46,977,522.58