Finding the Third Proportional to 358,722 and 538,933.50

Step by Step Solution

1. Step 1: Write the proportion equation
   358,722 : 538,933.50 = 538,933.50 : x
2. Step 2: Convert to fraction form
   358,722/538,933.50 = 538,933.50/x
3. Step 3: Cross multiply
   358,722x = 538,933.50 × 538,933.50
4. Step 4: Simplify right side
   358,722x = 290,449,317,422.25
5. Step 5: Solve for x
   x = 290,449,317,422.25/358,722
6. Step 6: Final answer
   x = 809,678.02