Finding the Third Proportional to 359,355 and 538,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,355 : 538,987.50 = 538,987.50 : x
2. Step 2: Convert to fraction form
   359,355/538,987.50 = 538,987.50/x
3. Step 3: Cross multiply
   359,355x = 538,987.50 × 538,987.50
4. Step 4: Simplify right side
   359,355x = 290,507,525,156.25
5. Step 5: Solve for x
   x = 290,507,525,156.25/359,355
6. Step 6: Final answer
   x = 808,413.76