Finding the Third Proportional to 19,510,991 and 42,018,712

Step by Step Solution

1. Step 1: Write the proportion equation
   19,510,991 : 42,018,712 = 42,018,712 : x
2. Step 2: Convert to fraction form
   19,510,991/42,018,712 = 42,018,712/x
3. Step 3: Cross multiply
   19,510,991x = 42,018,712 × 42,018,712
4. Step 4: Simplify right side
   19,510,991x = 1,765,572,158,138,944
5. Step 5: Solve for x
   x = 1,765,572,158,138,944/19,510,991
6. Step 6: Final answer
   x = 90,491,157.43