Finding the Third Proportional to 146,491.50 and 313,719

Step by Step Solution

1. Step 1: Write the proportion equation
   146,491.50 : 313,719 = 313,719 : x
2. Step 2: Convert to fraction form
   146,491.50/313,719 = 313,719/x
3. Step 3: Cross multiply
   146,491.50x = 313,719 × 313,719
4. Step 4: Simplify right side
   146,491.50x = 98,419,610,961
5. Step 5: Solve for x
   x = 98,419,610,961/146,491.50
6. Step 6: Final answer
   x = 671,845.20