Finding the Third Proportional to 290,360.50 and 442,922

Step by Step Solution

1. Step 1: Write the proportion equation
   290,360.50 : 442,922 = 442,922 : x
2. Step 2: Convert to fraction form
   290,360.50/442,922 = 442,922/x
3. Step 3: Cross multiply
   290,360.50x = 442,922 × 442,922
4. Step 4: Simplify right side
   290,360.50x = 196,179,898,084
5. Step 5: Solve for x
   x = 196,179,898,084/290,360.50
6. Step 6: Final answer
   x = 675,642.51