Finding the Third Proportional to 314,620.50 and 681,729

Step by Step Solution

1. Step 1: Write the proportion equation
   314,620.50 : 681,729 = 681,729 : x
2. Step 2: Convert to fraction form
   314,620.50/681,729 = 681,729/x
3. Step 3: Cross multiply
   314,620.50x = 681,729 × 681,729
4. Step 4: Simplify right side
   314,620.50x = 464,754,429,441
5. Step 5: Solve for x
   x = 464,754,429,441/314,620.50
6. Step 6: Final answer
   x = 1,477,190.55