Finding the Third Proportional to 4,483,080 and 9,728,208

Step by Step Solution

1. Step 1: Write the proportion equation
   4,483,080 : 9,728,208 = 9,728,208 : x
2. Step 2: Convert to fraction form
   4,483,080/9,728,208 = 9,728,208/x
3. Step 3: Cross multiply
   4,483,080x = 9,728,208 × 9,728,208
4. Step 4: Simplify right side
   4,483,080x = 94,638,030,891,264
5. Step 5: Solve for x
   x = 94,638,030,891,264/4,483,080
6. Step 6: Final answer
   x = 21,110,047.31