Finding the Third Proportional to 353,791 and 777,084.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,791 : 777,084.50 = 777,084.50 : x
2. Step 2: Convert to fraction form
   353,791/777,084.50 = 777,084.50/x
3. Step 3: Cross multiply
   353,791x = 777,084.50 × 777,084.50
4. Step 4: Simplify right side
   353,791x = 603,860,320,140.25
5. Step 5: Solve for x
   x = 603,860,320,140.25/353,791
6. Step 6: Final answer
   x = 1,706,827.82