Finding the Third Proportional to 118,072.50 and 254,803.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,072.50 : 254,803.50 = 254,803.50 : x
2. Step 2: Convert to fraction form
   118,072.50/254,803.50 = 254,803.50/x
3. Step 3: Cross multiply
   118,072.50x = 254,803.50 × 254,803.50
4. Step 4: Simplify right side
   118,072.50x = 64,924,823,612.25
5. Step 5: Solve for x
   x = 64,924,823,612.25/118,072.50
6. Step 6: Final answer
   x = 549,872.52