Finding the Third Proportional to 139,008 and 303,502.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,008 : 303,502.50 = 303,502.50 : x
2. Step 2: Convert to fraction form
   139,008/303,502.50 = 303,502.50/x
3. Step 3: Cross multiply
   139,008x = 303,502.50 × 303,502.50
4. Step 4: Simplify right side
   139,008x = 92,113,767,506.25
5. Step 5: Solve for x
   x = 92,113,767,506.25/139,008
6. Step 6: Final answer
   x = 662,650.84