Finding the Third Proportional to 133,300.69 and 289,225.69

Step by Step Solution

1. Step 1: Write the proportion equation
   133,300.69 : 289,225.69 = 289,225.69 : x
2. Step 2: Convert to fraction form
   133,300.69/289,225.69 = 289,225.69/x
3. Step 3: Cross multiply
   133,300.69x = 289,225.69 × 289,225.69
4. Step 4: Simplify right side
   133,300.69x = 83,651,498,309.85
5. Step 5: Solve for x
   x = 83,651,498,309.85/133,300.69
6. Step 6: Final answer
   x = 627,539.89