Finding the Third Proportional to 139,926 and 221,923.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,926 : 221,923.50 = 221,923.50 : x
2. Step 2: Convert to fraction form
   139,926/221,923.50 = 221,923.50/x
3. Step 3: Cross multiply
   139,926x = 221,923.50 × 221,923.50
4. Step 4: Simplify right side
   139,926x = 49,250,039,852.25
5. Step 5: Solve for x
   x = 49,250,039,852.25/139,926
6. Step 6: Final answer
   x = 351,972.04