Finding the Third Proportional to 637,255 and 1,390,448

Step by Step Solution

1. Step 1: Write the proportion equation
   637,255 : 1,390,448 = 1,390,448 : x
2. Step 2: Convert to fraction form
   637,255/1,390,448 = 1,390,448/x
3. Step 3: Cross multiply
   637,255x = 1,390,448 × 1,390,448
4. Step 4: Simplify right side
   637,255x = 1,933,345,640,704
5. Step 5: Solve for x
   x = 1,933,345,640,704/637,255
6. Step 6: Final answer
   x = 3,033,865.00