Finding the Third Proportional to 146,257.50 and 316,503

Step by Step Solution

1. Step 1: Write the proportion equation
   146,257.50 : 316,503 = 316,503 : x
2. Step 2: Convert to fraction form
   146,257.50/316,503 = 316,503/x
3. Step 3: Cross multiply
   146,257.50x = 316,503 × 316,503
4. Step 4: Simplify right side
   146,257.50x = 100,174,149,009
5. Step 5: Solve for x
   x = 100,174,149,009/146,257.50
6. Step 6: Final answer
   x = 684,916.32