Finding the Third Proportional to 350,949.50 and 718,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   350,949.50 : 718,498.50 = 718,498.50 : x
2. Step 2: Convert to fraction form
   350,949.50/718,498.50 = 718,498.50/x
3. Step 3: Cross multiply
   350,949.50x = 718,498.50 × 718,498.50
4. Step 4: Simplify right side
   350,949.50x = 516,240,094,502.25
5. Step 5: Solve for x
   x = 516,240,094,502.25/350,949.50
6. Step 6: Final answer
   x = 1,470,981.14