Finding the Third Proportional to 9,638,526 and 20,271,039

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638,526 : 20,271,039 = 20,271,039 : x
2. Step 2: Convert to fraction form
   9,638,526/20,271,039 = 20,271,039/x
3. Step 3: Cross multiply
   9,638,526x = 20,271,039 × 20,271,039
4. Step 4: Simplify right side
   9,638,526x = 410,915,022,139,521
5. Step 5: Solve for x
   x = 410,915,022,139,521/9,638,526
6. Step 6: Final answer
   x = 42,632,558.35