Finding the Third Proportional to 359,286.50 and 784,695

Step by Step Solution

1. Step 1: Write the proportion equation
   359,286.50 : 784,695 = 784,695 : x
2. Step 2: Convert to fraction form
   359,286.50/784,695 = 784,695/x
3. Step 3: Cross multiply
   359,286.50x = 784,695 × 784,695
4. Step 4: Simplify right side
   359,286.50x = 615,746,243,025
5. Step 5: Solve for x
   x = 615,746,243,025/359,286.50
6. Step 6: Final answer
   x = 1,713,802.89