Finding the Third Proportional to 261,802.13 and 342,766.69

Step by Step Solution

1. Step 1: Write the proportion equation
   261,802.13 : 342,766.69 = 342,766.69 : x
2. Step 2: Convert to fraction form
   261,802.13/342,766.69 = 342,766.69/x
3. Step 3: Cross multiply
   261,802.13x = 342,766.69 × 342,766.69
4. Step 4: Simplify right side
   261,802.13x = 117,489,002,059.72
5. Step 5: Solve for x
   x = 117,489,002,059.72/261,802.13
6. Step 6: Final answer
   x = 448,770.24