Finding the Third Proportional to 19,299,319,848 and 42,016,066,992

Step by Step Solution

1. Step 1: Write the proportion equation
   19,299,319,848 : 42,016,066,992 = 42,016,066,992 : x
2. Step 2: Convert to fraction form
   19,299,319,848/42,016,066,992 = 42,016,066,992/x
3. Step 3: Cross multiply
   19,299,319,848x = 42,016,066,992 × 42,016,066,992
4. Step 4: Simplify right side
   19,299,319,848x = 1,765,349,885,476,231,970,816
5. Step 5: Solve for x
   x = 1,765,349,885,476,231,970,816/19,299,319,848
6. Step 6: Final answer
   x = 91,472,129,555.86