Finding the Third Proportional to 58,372.50 and 128,058

Step by Step Solution

1. Step 1: Write the proportion equation
   58,372.50 : 128,058 = 128,058 : x
2. Step 2: Convert to fraction form
   58,372.50/128,058 = 128,058/x
3. Step 3: Cross multiply
   58,372.50x = 128,058 × 128,058
4. Step 4: Simplify right side
   58,372.50x = 16,398,851,364
5. Step 5: Solve for x
   x = 16,398,851,364/58,372.50
6. Step 6: Final answer
   x = 280,934.54