Finding the Third Proportional to 342,279 and 799,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,279 : 799,717.50 = 799,717.50 : x
2. Step 2: Convert to fraction form
   342,279/799,717.50 = 799,717.50/x
3. Step 3: Cross multiply
   342,279x = 799,717.50 × 799,717.50
4. Step 4: Simplify right side
   342,279x = 639,548,079,806.25
5. Step 5: Solve for x
   x = 639,548,079,806.25/342,279
6. Step 6: Final answer
   x = 1,868,499.32