Finding the Third Proportional to 146,685 and 221,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   146,685 : 221,431.50 = 221,431.50 : x
2. Step 2: Convert to fraction form
   146,685/221,431.50 = 221,431.50/x
3. Step 3: Cross multiply
   146,685x = 221,431.50 × 221,431.50
4. Step 4: Simplify right side
   146,685x = 49,031,909,192.25
5. Step 5: Solve for x
   x = 49,031,909,192.25/146,685
6. Step 6: Final answer
   x = 334,266.69