Finding the Third Proportional to 143,397 and 210,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,397 : 210,019.50 = 210,019.50 : x
2. Step 2: Convert to fraction form
   143,397/210,019.50 = 210,019.50/x
3. Step 3: Cross multiply
   143,397x = 210,019.50 × 210,019.50
4. Step 4: Simplify right side
   143,397x = 44,108,190,380.25
5. Step 5: Solve for x
   x = 44,108,190,380.25/143,397
6. Step 6: Final answer
   x = 307,594.93