Finding the Third Proportional to 157,498.50 and 345,618

Step by Step Solution

1. Step 1: Write the proportion equation
   157,498.50 : 345,618 = 345,618 : x
2. Step 2: Convert to fraction form
   157,498.50/345,618 = 345,618/x
3. Step 3: Cross multiply
   157,498.50x = 345,618 × 345,618
4. Step 4: Simplify right side
   157,498.50x = 119,451,801,924
5. Step 5: Solve for x
   x = 119,451,801,924/157,498.50
6. Step 6: Final answer
   x = 758,431.36