Finding the Third Proportional to 300,622.50 and 479,362.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,622.50 : 479,362.50 = 479,362.50 : x
2. Step 2: Convert to fraction form
   300,622.50/479,362.50 = 479,362.50/x
3. Step 3: Cross multiply
   300,622.50x = 479,362.50 × 479,362.50
4. Step 4: Simplify right side
   300,622.50x = 229,788,406,406.25
5. Step 5: Solve for x
   x = 229,788,406,406.25/300,622.50
6. Step 6: Final answer
   x = 764,375.28