Finding the Third Proportional to 67,507.50 and 144,787.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,507.50 : 144,787.50 = 144,787.50 : x
2. Step 2: Convert to fraction form
   67,507.50/144,787.50 = 144,787.50/x
3. Step 3: Cross multiply
   67,507.50x = 144,787.50 × 144,787.50
4. Step 4: Simplify right side
   67,507.50x = 20,963,420,156.25
5. Step 5: Solve for x
   x = 20,963,420,156.25/67,507.50
6. Step 6: Final answer
   x = 310,534.68