Finding the Third Proportional to 188,403 and 282,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   188,403 : 282,607.50 = 282,607.50 : x
2. Step 2: Convert to fraction form
   188,403/282,607.50 = 282,607.50/x
3. Step 3: Cross multiply
   188,403x = 282,607.50 × 282,607.50
4. Step 4: Simplify right side
   188,403x = 79,866,999,056.25
5. Step 5: Solve for x
   x = 79,866,999,056.25/188,403
6. Step 6: Final answer
   x = 423,915.75