Finding the Third Proportional to 118,912.50 and 254,430

Step by Step Solution

1. Step 1: Write the proportion equation
   118,912.50 : 254,430 = 254,430 : x
2. Step 2: Convert to fraction form
   118,912.50/254,430 = 254,430/x
3. Step 3: Cross multiply
   118,912.50x = 254,430 × 254,430
4. Step 4: Simplify right side
   118,912.50x = 64,734,624,900
5. Step 5: Solve for x
   x = 64,734,624,900/118,912.50
6. Step 6: Final answer
   x = 544,388.73