Finding the Third Proportional to 132,259.50 and 290,760

Step by Step Solution

1. Step 1: Write the proportion equation
   132,259.50 : 290,760 = 290,760 : x
2. Step 2: Convert to fraction form
   132,259.50/290,760 = 290,760/x
3. Step 3: Cross multiply
   132,259.50x = 290,760 × 290,760
4. Step 4: Simplify right side
   132,259.50x = 84,541,377,600
5. Step 5: Solve for x
   x = 84,541,377,600/132,259.50
6. Step 6: Final answer
   x = 639,208.36