Finding the Third Proportional to 272,055 and 428,950.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,055 : 428,950.50 = 428,950.50 : x
2. Step 2: Convert to fraction form
   272,055/428,950.50 = 428,950.50/x
3. Step 3: Cross multiply
   272,055x = 428,950.50 × 428,950.50
4. Step 4: Simplify right side
   272,055x = 183,998,531,450.25
5. Step 5: Solve for x
   x = 183,998,531,450.25/272,055
6. Step 6: Final answer
   x = 676,328.43