Finding the Third Proportional to 323,694 and 490,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   323,694 : 490,039.50 = 490,039.50 : x
2. Step 2: Convert to fraction form
   323,694/490,039.50 = 490,039.50/x
3. Step 3: Cross multiply
   323,694x = 490,039.50 × 490,039.50
4. Step 4: Simplify right side
   323,694x = 240,138,711,560.25
5. Step 5: Solve for x
   x = 240,138,711,560.25/323,694
6. Step 6: Final answer
   x = 741,869.52