Finding the Third Proportional to 9,691,800 and 21,144,012

Step by Step Solution

1. Step 1: Write the proportion equation
   9,691,800 : 21,144,012 = 21,144,012 : x
2. Step 2: Convert to fraction form
   9,691,800/21,144,012 = 21,144,012/x
3. Step 3: Cross multiply
   9,691,800x = 21,144,012 × 21,144,012
4. Step 4: Simplify right side
   9,691,800x = 447,069,243,456,144
5. Step 5: Solve for x
   x = 447,069,243,456,144/9,691,800
6. Step 6: Final answer
   x = 46,128,608.05