Finding the Third Proportional to 69,112.50 and 145,188

Step by Step Solution

1. Step 1: Write the proportion equation
   69,112.50 : 145,188 = 145,188 : x
2. Step 2: Convert to fraction form
   69,112.50/145,188 = 145,188/x
3. Step 3: Cross multiply
   69,112.50x = 145,188 × 145,188
4. Step 4: Simplify right side
   69,112.50x = 21,079,555,344
5. Step 5: Solve for x
   x = 21,079,555,344/69,112.50
6. Step 6: Final answer
   x = 305,003.51