Finding the Third Proportional to 129,456 and 174,903.75

Step by Step Solution

1. Step 1: Write the proportion equation
   129,456 : 174,903.75 = 174,903.75 : x
2. Step 2: Convert to fraction form
   129,456/174,903.75 = 174,903.75/x
3. Step 3: Cross multiply
   129,456x = 174,903.75 × 174,903.75
4. Step 4: Simplify right side
   129,456x = 30,591,321,764.06
5. Step 5: Solve for x
   x = 30,591,321,764.06/129,456
6. Step 6: Final answer
   x = 236,306.71