Finding the Third Proportional to 68,400 and 150,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,400 : 150,607.50 = 150,607.50 : x
2. Step 2: Convert to fraction form
   68,400/150,607.50 = 150,607.50/x
3. Step 3: Cross multiply
   68,400x = 150,607.50 × 150,607.50
4. Step 4: Simplify right side
   68,400x = 22,682,619,056.25
5. Step 5: Solve for x
   x = 22,682,619,056.25/68,400
6. Step 6: Final answer
   x = 331,617.24