Finding the Third Proportional to 146,014.50 and 316,815

Step by Step Solution

1. Step 1: Write the proportion equation
   146,014.50 : 316,815 = 316,815 : x
2. Step 2: Convert to fraction form
   146,014.50/316,815 = 316,815/x
3. Step 3: Cross multiply
   146,014.50x = 316,815 × 316,815
4. Step 4: Simplify right side
   146,014.50x = 100,371,744,225
5. Step 5: Solve for x
   x = 100,371,744,225/146,014.50
6. Step 6: Final answer
   x = 687,409.43