Finding the Third Proportional to 139,489.50 and 302,154

Step by Step Solution

1. Step 1: Write the proportion equation
   139,489.50 : 302,154 = 302,154 : x
2. Step 2: Convert to fraction form
   139,489.50/302,154 = 302,154/x
3. Step 3: Cross multiply
   139,489.50x = 302,154 × 302,154
4. Step 4: Simplify right side
   139,489.50x = 91,297,039,716
5. Step 5: Solve for x
   x = 91,297,039,716/139,489.50
6. Step 6: Final answer
   x = 654,508.33