Finding the Third Proportional to 359,273.50 and 784,669

Step by Step Solution

1. Step 1: Write the proportion equation
   359,273.50 : 784,669 = 784,669 : x
2. Step 2: Convert to fraction form
   359,273.50/784,669 = 784,669/x
3. Step 3: Cross multiply
   359,273.50x = 784,669 × 784,669
4. Step 4: Simplify right side
   359,273.50x = 615,705,439,561
5. Step 5: Solve for x
   x = 615,705,439,561/359,273.50
6. Step 6: Final answer
   x = 1,713,751.33