Finding the Third Proportional to 442,699 and 978,434

Step by Step Solution

1. Step 1: Write the proportion equation
   442,699 : 978,434 = 978,434 : x
2. Step 2: Convert to fraction form
   442,699/978,434 = 978,434/x
3. Step 3: Cross multiply
   442,699x = 978,434 × 978,434
4. Step 4: Simplify right side
   442,699x = 957,333,092,356
5. Step 5: Solve for x
   x = 957,333,092,356/442,699
6. Step 6: Final answer
   x = 2,162,492.10