Finding the Third Proportional to 291,046.50 and 624,618

Step by Step Solution

1. Step 1: Write the proportion equation
   291,046.50 : 624,618 = 624,618 : x
2. Step 2: Convert to fraction form
   291,046.50/624,618 = 624,618/x
3. Step 3: Cross multiply
   291,046.50x = 624,618 × 624,618
4. Step 4: Simplify right side
   291,046.50x = 390,147,645,924
5. Step 5: Solve for x
   x = 390,147,645,924/291,046.50
6. Step 6: Final answer
   x = 1,340,499.36