Finding the Third Proportional to 2,991,200 and 4,640,448

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991,200 : 4,640,448 = 4,640,448 : x
2. Step 2: Convert to fraction form
   2,991,200/4,640,448 = 4,640,448/x
3. Step 3: Cross multiply
   2,991,200x = 4,640,448 × 4,640,448
4. Step 4: Simplify right side
   2,991,200x = 21,533,757,640,704
5. Step 5: Solve for x
   x = 21,533,757,640,704/2,991,200
6. Step 6: Final answer
   x = 7,199,036.39