Finding the Third Proportional to 168,142.50 and 351,864

Step by Step Solution

1. Step 1: Write the proportion equation
   168,142.50 : 351,864 = 351,864 : x
2. Step 2: Convert to fraction form
   168,142.50/351,864 = 351,864/x
3. Step 3: Cross multiply
   168,142.50x = 351,864 × 351,864
4. Step 4: Simplify right side
   168,142.50x = 123,808,274,496
5. Step 5: Solve for x
   x = 123,808,274,496/168,142.50
6. Step 6: Final answer
   x = 736,329.45