Finding the Third Proportional to 138,640.50 and 295,713

Step by Step Solution

1. Step 1: Write the proportion equation
   138,640.50 : 295,713 = 295,713 : x
2. Step 2: Convert to fraction form
   138,640.50/295,713 = 295,713/x
3. Step 3: Cross multiply
   138,640.50x = 295,713 × 295,713
4. Step 4: Simplify right side
   138,640.50x = 87,446,178,369
5. Step 5: Solve for x
   x = 87,446,178,369/138,640.50
6. Step 6: Final answer
   x = 630,740.50