Finding the Third Proportional to 154,631 and 329,511.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,631 : 329,511.50 = 329,511.50 : x
2. Step 2: Convert to fraction form
   154,631/329,511.50 = 329,511.50/x
3. Step 3: Cross multiply
   154,631x = 329,511.50 × 329,511.50
4. Step 4: Simplify right side
   154,631x = 108,577,828,632.25
5. Step 5: Solve for x
   x = 108,577,828,632.25/154,631
6. Step 6: Final answer
   x = 702,173.75