Finding the Third Proportional to 300,911,736 and 415,791,678

Step by Step Solution

1. Step 1: Write the proportion equation
   300,911,736 : 415,791,678 = 415,791,678 : x
2. Step 2: Convert to fraction form
   300,911,736/415,791,678 = 415,791,678/x
3. Step 3: Cross multiply
   300,911,736x = 415,791,678 × 415,791,678
4. Step 4: Simplify right side
   300,911,736x = 172,882,719,494,055,680
5. Step 5: Solve for x
   x = 172,882,719,494,055,680/300,911,736
6. Step 6: Final answer
   x = 574,529,667.05