Finding the Third Proportional to 353,116.50 and 522,807

Step by Step Solution

1. Step 1: Write the proportion equation
   353,116.50 : 522,807 = 522,807 : x
2. Step 2: Convert to fraction form
   353,116.50/522,807 = 522,807/x
3. Step 3: Cross multiply
   353,116.50x = 522,807 × 522,807
4. Step 4: Simplify right side
   353,116.50x = 273,327,159,249
5. Step 5: Solve for x
   x = 273,327,159,249/353,116.50
6. Step 6: Final answer
   x = 774,042.45