Finding the Third Proportional to 143,045.63 and 210,189.38

Step by Step Solution

1. Step 1: Write the proportion equation
   143,045.63 : 210,189.38 = 210,189.38 : x
2. Step 2: Convert to fraction form
   143,045.63/210,189.38 = 210,189.38/x
3. Step 3: Cross multiply
   143,045.63x = 210,189.38 × 210,189.38
4. Step 4: Simplify right side
   143,045.63x = 44,179,573,362.89
5. Step 5: Solve for x
   x = 44,179,573,362.89/143,045.63
6. Step 6: Final answer
   x = 308,849.53