Finding the Third Proportional to 143,064 and 310,020

Step by Step Solution

1. Step 1: Write the proportion equation
   143,064 : 310,020 = 310,020 : x
2. Step 2: Convert to fraction form
   143,064/310,020 = 310,020/x
3. Step 3: Cross multiply
   143,064x = 310,020 × 310,020
4. Step 4: Simplify right side
   143,064x = 96,112,400,400
5. Step 5: Solve for x
   x = 96,112,400,400/143,064
6. Step 6: Final answer
   x = 671,814.02