Finding the Third Proportional to 13,109,546,988 and 19,166,616,018

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109,546,988 : 19,166,616,018 = 19,166,616,018 : x
2. Step 2: Convert to fraction form
   13,109,546,988/19,166,616,018 = 19,166,616,018/x
3. Step 3: Cross multiply
   13,109,546,988x = 19,166,616,018 × 19,166,616,018
4. Step 4: Simplify right side
   13,109,546,988x = 367,359,169,581,454,196,736
5. Step 5: Solve for x
   x = 367,359,169,581,454,196,736/13,109,546,988
6. Step 6: Final answer
   x = 28,022,262,700.44