Finding the Third Proportional to 353,079 and 784,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,079 : 784,617.50 = 784,617.50 : x
2. Step 2: Convert to fraction form
   353,079/784,617.50 = 784,617.50/x
3. Step 3: Cross multiply
   353,079x = 784,617.50 × 784,617.50
4. Step 4: Simplify right side
   353,079x = 615,624,621,306.25
5. Step 5: Solve for x
   x = 615,624,621,306.25/353,079
6. Step 6: Final answer
   x = 1,743,588.89