Finding the Third Proportional to 68,018.48 and 147,685.78

Step by Step Solution

1. Step 1: Write the proportion equation
   68,018.48 : 147,685.78 = 147,685.78 : x
2. Step 2: Convert to fraction form
   68,018.48/147,685.78 = 147,685.78/x
3. Step 3: Cross multiply
   68,018.48x = 147,685.78 × 147,685.78
4. Step 4: Simplify right side
   68,018.48x = 21,811,089,983.42
5. Step 5: Solve for x
   x = 21,811,089,983.42/68,018.48
6. Step 6: Final answer
   x = 320,664.16