Finding the Third Proportional to 397,882,472 and 856,231,144

Step by Step Solution

1. Step 1: Write the proportion equation
   397,882,472 : 856,231,144 = 856,231,144 : x
2. Step 2: Convert to fraction form
   397,882,472/856,231,144 = 856,231,144/x
3. Step 3: Cross multiply
   397,882,472x = 856,231,144 × 856,231,144
4. Step 4: Simplify right side
   397,882,472x = 733,131,771,955,548,672
5. Step 5: Solve for x
   x = 733,131,771,955,548,672/397,882,472
6. Step 6: Final answer
   x = 1,842,583,736.52