Finding the Third Proportional to 654,843 and 978,231

Step by Step Solution

1. Step 1: Write the proportion equation
   654,843 : 978,231 = 978,231 : x
2. Step 2: Convert to fraction form
   654,843/978,231 = 978,231/x
3. Step 3: Cross multiply
   654,843x = 978,231 × 978,231
4. Step 4: Simplify right side
   654,843x = 956,935,889,361
5. Step 5: Solve for x
   x = 956,935,889,361/654,843
6. Step 6: Final answer
   x = 1,461,321.09