Finding the Third Proportional to 144,918 and 299,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,918 : 299,191.50 = 299,191.50 : x
2. Step 2: Convert to fraction form
   144,918/299,191.50 = 299,191.50/x
3. Step 3: Cross multiply
   144,918x = 299,191.50 × 299,191.50
4. Step 4: Simplify right side
   144,918x = 89,515,553,672.25
5. Step 5: Solve for x
   x = 89,515,553,672.25/144,918
6. Step 6: Final answer
   x = 617,697.96