Finding the Third Proportional to 58,230 and 89,040

Step by Step Solution

1. Step 1: Write the proportion equation
   58,230 : 89,040 = 89,040 : x
2. Step 2: Convert to fraction form
   58,230/89,040 = 89,040/x
3. Step 3: Cross multiply
   58,230x = 89,040 × 89,040
4. Step 4: Simplify right side
   58,230x = 7,928,121,600
5. Step 5: Solve for x
   x = 7,928,121,600/58,230
6. Step 6: Final answer
   x = 136,151.84