Finding the Third Proportional to 290,328 and 625,150

Step by Step Solution

1. Step 1: Write the proportion equation
   290,328 : 625,150 = 625,150 : x
2. Step 2: Convert to fraction form
   290,328/625,150 = 625,150/x
3. Step 3: Cross multiply
   290,328x = 625,150 × 625,150
4. Step 4: Simplify right side
   290,328x = 390,812,522,500
5. Step 5: Solve for x
   x = 390,812,522,500/290,328
6. Step 6: Final answer
   x = 1,346,106.89