Finding the Third Proportional to 9,919,152 and 21,028,680

Step by Step Solution

1. Step 1: Write the proportion equation
   9,919,152 : 21,028,680 = 21,028,680 : x
2. Step 2: Convert to fraction form
   9,919,152/21,028,680 = 21,028,680/x
3. Step 3: Cross multiply
   9,919,152x = 21,028,680 × 21,028,680
4. Step 4: Simplify right side
   9,919,152x = 442,205,382,542,400
5. Step 5: Solve for x
   x = 442,205,382,542,400/9,919,152
6. Step 6: Final answer
   x = 44,580,966.45