Finding the Third Proportional to 12,667,400 and 19,109,388

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667,400 : 19,109,388 = 19,109,388 : x
2. Step 2: Convert to fraction form
   12,667,400/19,109,388 = 19,109,388/x
3. Step 3: Cross multiply
   12,667,400x = 19,109,388 × 19,109,388
4. Step 4: Simplify right side
   12,667,400x = 365,168,709,734,544
5. Step 5: Solve for x
   x = 365,168,709,734,544/12,667,400
6. Step 6: Final answer
   x = 28,827,439.71