Finding the Third Proportional to 4,651,812 and 9,855,980

Step by Step Solution

1. Step 1: Write the proportion equation
   4,651,812 : 9,855,980 = 9,855,980 : x
2. Step 2: Convert to fraction form
   4,651,812/9,855,980 = 9,855,980/x
3. Step 3: Cross multiply
   4,651,812x = 9,855,980 × 9,855,980
4. Step 4: Simplify right side
   4,651,812x = 97,140,341,760,400
5. Step 5: Solve for x
   x = 97,140,341,760,400/4,651,812
6. Step 6: Final answer
   x = 20,882,258.73