Finding the Third Proportional to 144,673 and 316,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,673 : 316,929.50 = 316,929.50 : x
2. Step 2: Convert to fraction form
   144,673/316,929.50 = 316,929.50/x
3. Step 3: Cross multiply
   144,673x = 316,929.50 × 316,929.50
4. Step 4: Simplify right side
   144,673x = 100,444,307,970.25
5. Step 5: Solve for x
   x = 100,444,307,970.25/144,673
6. Step 6: Final answer
   x = 694,285.10