Finding the Third Proportional to 19,909,507,309 and 42,658,833,950

Step by Step Solution

1. Step 1: Write the proportion equation
   19,909,507,309 : 42,658,833,950 = 42,658,833,950 : x
2. Step 2: Convert to fraction form
   19,909,507,309/42,658,833,950 = 42,658,833,950/x
3. Step 3: Cross multiply
   19,909,507,309x = 42,658,833,950 × 42,658,833,950
4. Step 4: Simplify right side
   19,909,507,309x = 1,819,776,113,973,672,542,208
5. Step 5: Solve for x
   x = 1,819,776,113,973,672,542,208/19,909,507,309
6. Step 6: Final answer
   x = 91,402,368,010.94