Finding the Third Proportional to 11,911,308 and 17,819,388

Step by Step Solution

1. Step 1: Write the proportion equation
   11,911,308 : 17,819,388 = 17,819,388 : x
2. Step 2: Convert to fraction form
   11,911,308/17,819,388 = 17,819,388/x
3. Step 3: Cross multiply
   11,911,308x = 17,819,388 × 17,819,388
4. Step 4: Simplify right side
   11,911,308x = 317,530,588,694,544
5. Step 5: Solve for x
   x = 317,530,588,694,544/11,911,308
6. Step 6: Final answer
   x = 26,657,911.01