Finding the Third Proportional to 9,638,540 and 20,271,068

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638,540 : 20,271,068 = 20,271,068 : x
2. Step 2: Convert to fraction form
   9,638,540/20,271,068 = 20,271,068/x
3. Step 3: Cross multiply
   9,638,540x = 20,271,068 × 20,271,068
4. Step 4: Simplify right side
   9,638,540x = 410,916,197,860,624
5. Step 5: Solve for x
   x = 410,916,197,860,624/9,638,540
6. Step 6: Final answer
   x = 42,632,618.41