Finding the Third Proportional to 357,435 and 555,754.50

Step by Step Solution

1. Step 1: Write the proportion equation
   357,435 : 555,754.50 = 555,754.50 : x
2. Step 2: Convert to fraction form
   357,435/555,754.50 = 555,754.50/x
3. Step 3: Cross multiply
   357,435x = 555,754.50 × 555,754.50
4. Step 4: Simplify right side
   357,435x = 308,863,064,270.25
5. Step 5: Solve for x
   x = 308,863,064,270.25/357,435
6. Step 6: Final answer
   x = 864,109.74