Finding the Third Proportional to 99,436.50 and 144,459

Step by Step Solution

1. Step 1: Write the proportion equation
   99,436.50 : 144,459 = 144,459 : x
2. Step 2: Convert to fraction form
   99,436.50/144,459 = 144,459/x
3. Step 3: Cross multiply
   99,436.50x = 144,459 × 144,459
4. Step 4: Simplify right side
   99,436.50x = 20,868,402,681
5. Step 5: Solve for x
   x = 20,868,402,681/99,436.50
6. Step 6: Final answer
   x = 209,866.63