Finding the Third Proportional to 174,802.50 and 378,198

Step by Step Solution

1. Step 1: Write the proportion equation
   174,802.50 : 378,198 = 378,198 : x
2. Step 2: Convert to fraction form
   174,802.50/378,198 = 378,198/x
3. Step 3: Cross multiply
   174,802.50x = 378,198 × 378,198
4. Step 4: Simplify right side
   174,802.50x = 143,033,727,204
5. Step 5: Solve for x
   x = 143,033,727,204/174,802.50
6. Step 6: Final answer
   x = 818,259.05