Finding the Third Proportional to 2,192,900,185 and 4,787,644,387

Step by Step Solution

1. Step 1: Write the proportion equation
   2,192,900,185 : 4,787,644,387 = 4,787,644,387 : x
2. Step 2: Convert to fraction form
   2,192,900,185/4,787,644,387 = 4,787,644,387/x
3. Step 3: Cross multiply
   2,192,900,185x = 4,787,644,387 × 4,787,644,387
4. Step 4: Simplify right side
   2,192,900,185x = 22,921,538,776,372,604,928
5. Step 5: Solve for x
   x = 22,921,538,776,372,604,928/2,192,900,185
6. Step 6: Final answer
   x = 10,452,613,818.52