Finding the Third Proportional to 9,171,304 and 19,990,664

Step by Step Solution

1. Step 1: Write the proportion equation
   9,171,304 : 19,990,664 = 19,990,664 : x
2. Step 2: Convert to fraction form
   9,171,304/19,990,664 = 19,990,664/x
3. Step 3: Cross multiply
   9,171,304x = 19,990,664 × 19,990,664
4. Step 4: Simplify right side
   9,171,304x = 399,626,647,160,896
5. Step 5: Solve for x
   x = 399,626,647,160,896/9,171,304
6. Step 6: Final answer
   x = 43,573,590.75