Finding the Third Proportional to 139,435.88 and 302,054.63

Step by Step Solution

1. Step 1: Write the proportion equation
   139,435.88 : 302,054.63 = 302,054.63 : x
2. Step 2: Convert to fraction form
   139,435.88/302,054.63 = 302,054.63/x
3. Step 3: Cross multiply
   139,435.88x = 302,054.63 × 302,054.63
4. Step 4: Simplify right side
   139,435.88x = 91,236,996,483.89
5. Step 5: Solve for x
   x = 91,236,996,483.89/139,435.88
6. Step 6: Final answer
   x = 654,329.43