Finding the Third Proportional to 118,401.75 and 253,597.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,401.75 : 253,597.50 = 253,597.50 : x
2. Step 2: Convert to fraction form
   118,401.75/253,597.50 = 253,597.50/x
3. Step 3: Cross multiply
   118,401.75x = 253,597.50 × 253,597.50
4. Step 4: Simplify right side
   118,401.75x = 64,311,692,006.25
5. Step 5: Solve for x
   x = 64,311,692,006.25/118,401.75
6. Step 6: Final answer
   x = 543,165.05