Finding the Third Proportional to 72,618 and 156,358.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,618 : 156,358.50 = 156,358.50 : x
2. Step 2: Convert to fraction form
   72,618/156,358.50 = 156,358.50/x
3. Step 3: Cross multiply
   72,618x = 156,358.50 × 156,358.50
4. Step 4: Simplify right side
   72,618x = 24,447,980,522.25
5. Step 5: Solve for x
   x = 24,447,980,522.25/72,618
6. Step 6: Final answer
   x = 336,665.57