Finding the Third Proportional to 628,870.50 and 1,357,317

Step by Step Solution

1. Step 1: Write the proportion equation
   628,870.50 : 1,357,317 = 1,357,317 : x
2. Step 2: Convert to fraction form
   628,870.50/1,357,317 = 1,357,317/x
3. Step 3: Cross multiply
   628,870.50x = 1,357,317 × 1,357,317
4. Step 4: Simplify right side
   628,870.50x = 1,842,309,438,489
5. Step 5: Solve for x
   x = 1,842,309,438,489/628,870.50
6. Step 6: Final answer
   x = 2,929,552.97