Finding the Third Proportional to 654,988 and 978,426

Step by Step Solution

1. Step 1: Write the proportion equation
   654,988 : 978,426 = 978,426 : x
2. Step 2: Convert to fraction form
   654,988/978,426 = 978,426/x
3. Step 3: Cross multiply
   654,988x = 978,426 × 978,426
4. Step 4: Simplify right side
   654,988x = 957,317,437,476
5. Step 5: Solve for x
   x = 957,317,437,476/654,988
6. Step 6: Final answer
   x = 1,461,580.12