Finding the Third Proportional to 68,018.50 and 147,686

Step by Step Solution

1. Step 1: Write the proportion equation
   68,018.50 : 147,686 = 147,686 : x
2. Step 2: Convert to fraction form
   68,018.50/147,686 = 147,686/x
3. Step 3: Cross multiply
   68,018.50x = 147,686 × 147,686
4. Step 4: Simplify right side
   68,018.50x = 21,811,154,596
5. Step 5: Solve for x
   x = 21,811,154,596/68,018.50
6. Step 6: Final answer
   x = 320,665.03