Finding the Third Proportional to 143,046 and 210,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,046 : 210,189.50 = 210,189.50 : x
2. Step 2: Convert to fraction form
   143,046/210,189.50 = 210,189.50/x
3. Step 3: Cross multiply
   143,046x = 210,189.50 × 210,189.50
4. Step 4: Simplify right side
   143,046x = 44,179,625,910.25
5. Step 5: Solve for x
   x = 44,179,625,910.25/143,046
6. Step 6: Final answer
   x = 308,849.08