Finding the Third Proportional to 142,603.03 and 213,460.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,603.03 : 213,460.31 = 213,460.31 : x
2. Step 2: Convert to fraction form
   142,603.03/213,460.31 = 213,460.31/x
3. Step 3: Cross multiply
   142,603.03x = 213,460.31 × 213,460.31
4. Step 4: Simplify right side
   142,603.03x = 45,565,305,012.60
5. Step 5: Solve for x
   x = 45,565,305,012.60/142,603.03
6. Step 6: Final answer
   x = 319,525.50