Finding the Third Proportional to 99,904 and 214,058

Step by Step Solution

1. Step 1: Write the proportion equation
   99,904 : 214,058 = 214,058 : x
2. Step 2: Convert to fraction form
   99,904/214,058 = 214,058/x
3. Step 3: Cross multiply
   99,904x = 214,058 × 214,058
4. Step 4: Simplify right side
   99,904x = 45,820,827,364
5. Step 5: Solve for x
   x = 45,820,827,364/99,904
6. Step 6: Final answer
   x = 458,648.58