Finding the Third Proportional to 13,619,860,119 and 19,171,406,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,619,860,119 : 19,171,406,617.50 = 19,171,406,617.50 : x
2. Step 2: Convert to fraction form
   13,619,860,119/19,171,406,617.50 = 19,171,406,617.50/x
3. Step 3: Cross multiply
   13,619,860,119x = 19,171,406,617.50 × 19,171,406,617.50
4. Step 4: Simplify right side
   13,619,860,119x = 367,542,831,693,522,796,544
5. Step 5: Solve for x
   x = 367,542,831,693,522,796,544/13,619,860,119
6. Step 6: Final answer
   x = 26,985,800,770.51