Finding the Third Proportional to 154,428 and 333,457.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,428 : 333,457.50 = 333,457.50 : x
2. Step 2: Convert to fraction form
   154,428/333,457.50 = 333,457.50/x
3. Step 3: Cross multiply
   154,428x = 333,457.50 × 333,457.50
4. Step 4: Simplify right side
   154,428x = 111,193,904,306.25
5. Step 5: Solve for x
   x = 111,193,904,306.25/154,428
6. Step 6: Final answer
   x = 720,037.20