Finding the Third Proportional to 79,218 and 168,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,218 : 168,142.50 = 168,142.50 : x
2. Step 2: Convert to fraction form
   79,218/168,142.50 = 168,142.50/x
3. Step 3: Cross multiply
   79,218x = 168,142.50 × 168,142.50
4. Step 4: Simplify right side
   79,218x = 28,271,900,306.25
5. Step 5: Solve for x
   x = 28,271,900,306.25/79,218
6. Step 6: Final answer
   x = 356,887.33