Finding the Third Proportional to 143,091 and 310,786.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,091 : 310,786.50 = 310,786.50 : x
2. Step 2: Convert to fraction form
   143,091/310,786.50 = 310,786.50/x
3. Step 3: Cross multiply
   143,091x = 310,786.50 × 310,786.50
4. Step 4: Simplify right side
   143,091x = 96,588,248,582.25
5. Step 5: Solve for x
   x = 96,588,248,582.25/143,091
6. Step 6: Final answer
   x = 675,012.74