Finding the Third Proportional to 144,152.06 and 315,470.81

Step by Step Solution

1. Step 1: Write the proportion equation
   144,152.06 : 315,470.81 = 315,470.81 : x
2. Step 2: Convert to fraction form
   144,152.06/315,470.81 = 315,470.81/x
3. Step 3: Cross multiply
   144,152.06x = 315,470.81 × 315,470.81
4. Step 4: Simplify right side
   144,152.06x = 99,521,833,539.41
5. Step 5: Solve for x
   x = 99,521,833,539.41/144,152.06
6. Step 6: Final answer
   x = 690,394.79