Finding the Third Proportional to 151,139.25 and 329,909.63

Step by Step Solution

1. Step 1: Write the proportion equation
   151,139.25 : 329,909.63 = 329,909.63 : x
2. Step 2: Convert to fraction form
   151,139.25/329,909.63 = 329,909.63/x
3. Step 3: Cross multiply
   151,139.25x = 329,909.63 × 329,909.63
4. Step 4: Simplify right side
   151,139.25x = 108,840,360,667.64
5. Step 5: Solve for x
   x = 108,840,360,667.64/151,139.25
6. Step 6: Final answer
   x = 720,132.99