Finding the Third Proportional to 4,548,590 and 9,805,732

Step by Step Solution

1. Step 1: Write the proportion equation
   4,548,590 : 9,805,732 = 9,805,732 : x
2. Step 2: Convert to fraction form
   4,548,590/9,805,732 = 9,805,732/x
3. Step 3: Cross multiply
   4,548,590x = 9,805,732 × 9,805,732
4. Step 4: Simplify right side
   4,548,590x = 96,152,380,055,824
5. Step 5: Solve for x
   x = 96,152,380,055,824/4,548,590
6. Step 6: Final answer
   x = 21,138,941.97