Finding the Third Proportional to 2,640,385 and 5,659,720

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640,385 : 5,659,720 = 5,659,720 : x
2. Step 2: Convert to fraction form
   2,640,385/5,659,720 = 5,659,720/x
3. Step 3: Cross multiply
   2,640,385x = 5,659,720 × 5,659,720
4. Step 4: Simplify right side
   2,640,385x = 32,032,430,478,400
5. Step 5: Solve for x
   x = 32,032,430,478,400/2,640,385
6. Step 6: Final answer
   x = 12,131,727.18