Finding the Third Proportional to 353,186 and 784,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,186 : 784,831.50 = 784,831.50 : x
2. Step 2: Convert to fraction form
   353,186/784,831.50 = 784,831.50/x
3. Step 3: Cross multiply
   353,186x = 784,831.50 × 784,831.50
4. Step 4: Simplify right side
   353,186x = 615,960,483,392.25
5. Step 5: Solve for x
   x = 615,960,483,392.25/353,186
6. Step 6: Final answer
   x = 1,744,011.61