Finding the Third Proportional to 154,929.50 and 328,460.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,929.50 : 328,460.50 = 328,460.50 : x
2. Step 2: Convert to fraction form
   154,929.50/328,460.50 = 328,460.50/x
3. Step 3: Cross multiply
   154,929.50x = 328,460.50 × 328,460.50
4. Step 4: Simplify right side
   154,929.50x = 107,886,300,060.25
5. Step 5: Solve for x
   x = 107,886,300,060.25/154,929.50
6. Step 6: Final answer
   x = 696,357.38