Finding the Third Proportional to 139,513.83 and 302,811.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,513.83 : 302,811.27 = 302,811.27 : x
2. Step 2: Convert to fraction form
   139,513.83/302,811.27 = 302,811.27/x
3. Step 3: Cross multiply
   139,513.83x = 302,811.27 × 302,811.27
4. Step 4: Simplify right side
   139,513.83x = 91,694,667,320.84
5. Step 5: Solve for x
   x = 91,694,667,320.84/139,513.83
6. Step 6: Final answer
   x = 657,244.29