Finding the Third Proportional to 133,117.50 and 289,560

Step by Step Solution

1. Step 1: Write the proportion equation
   133,117.50 : 289,560 = 289,560 : x
2. Step 2: Convert to fraction form
   133,117.50/289,560 = 289,560/x
3. Step 3: Cross multiply
   133,117.50x = 289,560 × 289,560
4. Step 4: Simplify right side
   133,117.50x = 83,844,993,600
5. Step 5: Solve for x
   x = 83,844,993,600/133,117.50
6. Step 6: Final answer
   x = 629,857.03