Finding the Third Proportional to 172,489.50 and 375,354

Step by Step Solution

1. Step 1: Write the proportion equation
   172,489.50 : 375,354 = 375,354 : x
2. Step 2: Convert to fraction form
   172,489.50/375,354 = 375,354/x
3. Step 3: Cross multiply
   172,489.50x = 375,354 × 375,354
4. Step 4: Simplify right side
   172,489.50x = 140,890,625,316
5. Step 5: Solve for x
   x = 140,890,625,316/172,489.50
6. Step 6: Final answer
   x = 816,806.97