Finding the Third Proportional to 3,490,430 and 5,120,733

Step by Step Solution

1. Step 1: Write the proportion equation
   3,490,430 : 5,120,733 = 5,120,733 : x
2. Step 2: Convert to fraction form
   3,490,430/5,120,733 = 5,120,733/x
3. Step 3: Cross multiply
   3,490,430x = 5,120,733 × 5,120,733
4. Step 4: Simplify right side
   3,490,430x = 26,221,906,457,289
5. Step 5: Solve for x
   x = 26,221,906,457,289/3,490,430
6. Step 6: Final answer
   x = 7,512,514.63