Finding the Third Proportional to 340,681.50 and 716,670

Step by Step Solution

1. Step 1: Write the proportion equation
   340,681.50 : 716,670 = 716,670 : x
2. Step 2: Convert to fraction form
   340,681.50/716,670 = 716,670/x
3. Step 3: Cross multiply
   340,681.50x = 716,670 × 716,670
4. Step 4: Simplify right side
   340,681.50x = 513,615,888,900
5. Step 5: Solve for x
   x = 513,615,888,900/340,681.50
6. Step 6: Final answer
   x = 1,507,613.09