Finding the Third Proportional to 68,237 and 148,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,237 : 148,128.50 = 148,128.50 : x
2. Step 2: Convert to fraction form
   68,237/148,128.50 = 148,128.50/x
3. Step 3: Cross multiply
   68,237x = 148,128.50 × 148,128.50
4. Step 4: Simplify right side
   68,237x = 21,942,052,512.25
5. Step 5: Solve for x
   x = 21,942,052,512.25/68,237
6. Step 6: Final answer
   x = 321,556.52