Finding the Third Proportional to 148,392,957 and 317,164,049

Step by Step Solution

1. Step 1: Write the proportion equation
   148,392,957 : 317,164,049 = 317,164,049 : x
2. Step 2: Convert to fraction form
   148,392,957/317,164,049 = 317,164,049/x
3. Step 3: Cross multiply
   148,392,957x = 317,164,049 × 317,164,049
4. Step 4: Simplify right side
   148,392,957x = 100,593,033,978,074,400
5. Step 5: Solve for x
   x = 100,593,033,978,074,400/148,392,957
6. Step 6: Final answer
   x = 677,882,805.30