Finding the Third Proportional to 159,980.63 and 345,618

Step by Step Solution

1. Step 1: Write the proportion equation
   159,980.63 : 345,618 = 345,618 : x
2. Step 2: Convert to fraction form
   159,980.63/345,618 = 345,618/x
3. Step 3: Cross multiply
   159,980.63x = 345,618 × 345,618
4. Step 4: Simplify right side
   159,980.63x = 119,451,801,924
5. Step 5: Solve for x
   x = 119,451,801,924/159,980.63
6. Step 6: Final answer
   x = 746,664.18