Finding the Third Proportional to 168,399 and 328,460.06

Step by Step Solution

1. Step 1: Write the proportion equation
   168,399 : 328,460.06 = 328,460.06 : x
2. Step 2: Convert to fraction form
   168,399/328,460.06 = 328,460.06/x
3. Step 3: Cross multiply
   168,399x = 328,460.06 × 328,460.06
4. Step 4: Simplify right side
   168,399x = 107,886,012,657.50
5. Step 5: Solve for x
   x = 107,886,012,657.50/168,399
6. Step 6: Final answer
   x = 640,657.09