Finding the Third Proportional to 67,767.75 and 144,877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,767.75 : 144,877.50 = 144,877.50 : x
2. Step 2: Convert to fraction form
   67,767.75/144,877.50 = 144,877.50/x
3. Step 3: Cross multiply
   67,767.75x = 144,877.50 × 144,877.50
4. Step 4: Simplify right side
   67,767.75x = 20,989,490,006.25
5. Step 5: Solve for x
   x = 20,989,490,006.25/67,767.75
6. Step 6: Final answer
   x = 309,726.82