Finding the Third Proportional to 654,839 and 978,225

Step by Step Solution

1. Step 1: Write the proportion equation
   654,839 : 978,225 = 978,225 : x
2. Step 2: Convert to fraction form
   654,839/978,225 = 978,225/x
3. Step 3: Cross multiply
   654,839x = 978,225 × 978,225
4. Step 4: Simplify right side
   654,839x = 956,924,150,625
5. Step 5: Solve for x
   x = 956,924,150,625/654,839
6. Step 6: Final answer
   x = 1,461,312.09