Finding the Third Proportional to 9,928,545 and 21,425,578.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928,545 : 21,425,578.50 = 21,425,578.50 : x
2. Step 2: Convert to fraction form
   9,928,545/21,425,578.50 = 21,425,578.50/x
3. Step 3: Cross multiply
   9,928,545x = 21,425,578.50 × 21,425,578.50
4. Step 4: Simplify right side
   9,928,545x = 459,055,414,059,662.25
5. Step 5: Solve for x
   x = 459,055,414,059,662.25/9,928,545
6. Step 6: Final answer
   x = 46,235,920.17