Finding the Third Proportional to 364,986 and 488,217.38

Step by Step Solution

1. Step 1: Write the proportion equation
   364,986 : 488,217.38 = 488,217.38 : x
2. Step 2: Convert to fraction form
   364,986/488,217.38 = 488,217.38/x
3. Step 3: Cross multiply
   364,986x = 488,217.38 × 488,217.38
4. Step 4: Simplify right side
   364,986x = 238,356,205,251.89
5. Step 5: Solve for x
   x = 238,356,205,251.89/364,986
6. Step 6: Final answer
   x = 653,055.75