Finding the Third Proportional to 163,485 and 221,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,485 : 221,899.50 = 221,899.50 : x
2. Step 2: Convert to fraction form
   163,485/221,899.50 = 221,899.50/x
3. Step 3: Cross multiply
   163,485x = 221,899.50 × 221,899.50
4. Step 4: Simplify right side
   163,485x = 49,239,388,100.25
5. Step 5: Solve for x
   x = 49,239,388,100.25/163,485
6. Step 6: Final answer
   x = 301,185.97