Finding the Third Proportional to 43,258 and 55,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,258 : 55,276.50 = 55,276.50 : x
2. Step 2: Convert to fraction form
   43,258/55,276.50 = 55,276.50/x
3. Step 3: Cross multiply
   43,258x = 55,276.50 × 55,276.50
4. Step 4: Simplify right side
   43,258x = 3,055,491,452.25
5. Step 5: Solve for x
   x = 3,055,491,452.25/43,258
6. Step 6: Final answer
   x = 70,634.14