Finding the Third Proportional to 139,434.06 and 302,049.47

Step by Step Solution

1. Step 1: Write the proportion equation
   139,434.06 : 302,049.47 = 302,049.47 : x
2. Step 2: Convert to fraction form
   139,434.06/302,049.47 = 302,049.47/x
3. Step 3: Cross multiply
   139,434.06x = 302,049.47 × 302,049.47
4. Step 4: Simplify right side
   139,434.06x = 91,233,885,111.80
5. Step 5: Solve for x
   x = 91,233,885,111.80/139,434.06
6. Step 6: Final answer
   x = 654,315.61