Finding the Third Proportional to 72,900 and 154,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,900 : 154,426.50 = 154,426.50 : x
2. Step 2: Convert to fraction form
   72,900/154,426.50 = 154,426.50/x
3. Step 3: Cross multiply
   72,900x = 154,426.50 × 154,426.50
4. Step 4: Simplify right side
   72,900x = 23,847,543,902.25
5. Step 5: Solve for x
   x = 23,847,543,902.25/72,900
6. Step 6: Final answer
   x = 327,126.80