Finding the Third Proportional to 4,121,072 and 9,064,320

Step by Step Solution

1. Step 1: Write the proportion equation
   4,121,072 : 9,064,320 = 9,064,320 : x
2. Step 2: Convert to fraction form
   4,121,072/9,064,320 = 9,064,320/x
3. Step 3: Cross multiply
   4,121,072x = 9,064,320 × 9,064,320
4. Step 4: Simplify right side
   4,121,072x = 82,161,897,062,400
5. Step 5: Solve for x
   x = 82,161,897,062,400/4,121,072
6. Step 6: Final answer
   x = 19,937,020.53