Finding the Third Proportional to 30,188 and 64,999

Step by Step Solution

1. Step 1: Write the proportion equation
   30,188 : 64,999 = 64,999 : x
2. Step 2: Convert to fraction form
   30,188/64,999 = 64,999/x
3. Step 3: Cross multiply
   30,188x = 64,999 × 64,999
4. Step 4: Simplify right side
   30,188x = 4,224,870,001
5. Step 5: Solve for x
   x = 4,224,870,001/30,188
6. Step 6: Final answer
   x = 139,951.97