Finding the Third Proportional to 58,458.50 and 126,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,458.50 : 126,258.50 = 126,258.50 : x
2. Step 2: Convert to fraction form
   58,458.50/126,258.50 = 126,258.50/x
3. Step 3: Cross multiply
   58,458.50x = 126,258.50 × 126,258.50
4. Step 4: Simplify right side
   58,458.50x = 15,941,208,822.25
5. Step 5: Solve for x
   x = 15,941,208,822.25/58,458.50
6. Step 6: Final answer
   x = 272,692.74