Finding the Third Proportional to 4,581,390 and 9,047,130

Step by Step Solution

1. Step 1: Write the proportion equation
   4,581,390 : 9,047,130 = 9,047,130 : x
2. Step 2: Convert to fraction form
   4,581,390/9,047,130 = 9,047,130/x
3. Step 3: Cross multiply
   4,581,390x = 9,047,130 × 9,047,130
4. Step 4: Simplify right side
   4,581,390x = 81,850,561,236,900
5. Step 5: Solve for x
   x = 81,850,561,236,900/4,581,390
6. Step 6: Final answer
   x = 17,865,879.40