Finding the Third Proportional to 252,112.50 and 542,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   252,112.50 : 542,456.50 = 542,456.50 : x
2. Step 2: Convert to fraction form
   252,112.50/542,456.50 = 542,456.50/x
3. Step 3: Cross multiply
   252,112.50x = 542,456.50 × 542,456.50
4. Step 4: Simplify right side
   252,112.50x = 294,259,054,392.25
5. Step 5: Solve for x
   x = 294,259,054,392.25/252,112.50
6. Step 6: Final answer
   x = 1,167,173.60