Finding the Third Proportional to 172,531.50 and 375,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,531.50 : 375,436.50 = 375,436.50 : x
2. Step 2: Convert to fraction form
   172,531.50/375,436.50 = 375,436.50/x
3. Step 3: Cross multiply
   172,531.50x = 375,436.50 × 375,436.50
4. Step 4: Simplify right side
   172,531.50x = 140,952,565,532.25
5. Step 5: Solve for x
   x = 140,952,565,532.25/172,531.50
6. Step 6: Final answer
   x = 816,967.14