Finding the Third Proportional to 654,817 and 978,192

Step by Step Solution

1. Step 1: Write the proportion equation
   654,817 : 978,192 = 978,192 : x
2. Step 2: Convert to fraction form
   654,817/978,192 = 978,192/x
3. Step 3: Cross multiply
   654,817x = 978,192 × 978,192
4. Step 4: Simplify right side
   654,817x = 956,859,588,864
5. Step 5: Solve for x
   x = 956,859,588,864/654,817
6. Step 6: Final answer
   x = 1,461,262.60