Finding the Third Proportional to 81,598.50 and 145,512

Step by Step Solution

1. Step 1: Write the proportion equation
   81,598.50 : 145,512 = 145,512 : x
2. Step 2: Convert to fraction form
   81,598.50/145,512 = 145,512/x
3. Step 3: Cross multiply
   81,598.50x = 145,512 × 145,512
4. Step 4: Simplify right side
   81,598.50x = 21,173,742,144
5. Step 5: Solve for x
   x = 21,173,742,144/81,598.50
6. Step 6: Final answer
   x = 259,486.90