Finding the Third Proportional to 442,521 and 978,058

Step by Step Solution

1. Step 1: Write the proportion equation
   442,521 : 978,058 = 978,058 : x
2. Step 2: Convert to fraction form
   442,521/978,058 = 978,058/x
3. Step 3: Cross multiply
   442,521x = 978,058 × 978,058
4. Step 4: Simplify right side
   442,521x = 956,597,451,364
5. Step 5: Solve for x
   x = 956,597,451,364/442,521
6. Step 6: Final answer
   x = 2,161,699.56