Finding the Third Proportional to 133,107 and 289,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,107 : 289,540.50 = 289,540.50 : x
2. Step 2: Convert to fraction form
   133,107/289,540.50 = 289,540.50/x
3. Step 3: Cross multiply
   133,107x = 289,540.50 × 289,540.50
4. Step 4: Simplify right side
   133,107x = 83,833,701,140.25
5. Step 5: Solve for x
   x = 83,833,701,140.25/133,107
6. Step 6: Final answer
   x = 629,821.88