Finding the Third Proportional to 143,235 and 308,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,235 : 308,812.50 = 308,812.50 : x
2. Step 2: Convert to fraction form
   143,235/308,812.50 = 308,812.50/x
3. Step 3: Cross multiply
   143,235x = 308,812.50 × 308,812.50
4. Step 4: Simplify right side
   143,235x = 95,365,160,156.25
5. Step 5: Solve for x
   x = 95,365,160,156.25/143,235
6. Step 6: Final answer
   x = 665,795.09