Finding the Third Proportional to 252,111.50 and 542,454.50

Step by Step Solution

1. Step 1: Write the proportion equation
   252,111.50 : 542,454.50 = 542,454.50 : x
2. Step 2: Convert to fraction form
   252,111.50/542,454.50 = 542,454.50/x
3. Step 3: Cross multiply
   252,111.50x = 542,454.50 × 542,454.50
4. Step 4: Simplify right side
   252,111.50x = 294,256,884,570.25
5. Step 5: Solve for x
   x = 294,256,884,570.25/252,111.50
6. Step 6: Final answer
   x = 1,167,169.62