Finding the Third Proportional to 3,988,120 and 8,773,712

Step by Step Solution

1. Step 1: Write the proportion equation
   3,988,120 : 8,773,712 = 8,773,712 : x
2. Step 2: Convert to fraction form
   3,988,120/8,773,712 = 8,773,712/x
3. Step 3: Cross multiply
   3,988,120x = 8,773,712 × 8,773,712
4. Step 4: Simplify right side
   3,988,120x = 76,978,022,258,944
5. Step 5: Solve for x
   x = 76,978,022,258,944/3,988,120
6. Step 6: Final answer
   x = 19,301,832.01