Finding the Third Proportional to 3,490,418 and 5,120,703

Step by Step Solution

1. Step 1: Write the proportion equation
   3,490,418 : 5,120,703 = 5,120,703 : x
2. Step 2: Convert to fraction form
   3,490,418/5,120,703 = 5,120,703/x
3. Step 3: Cross multiply
   3,490,418x = 5,120,703 × 5,120,703
4. Step 4: Simplify right side
   3,490,418x = 26,221,599,214,209
5. Step 5: Solve for x
   x = 26,221,599,214,209/3,490,418
6. Step 6: Final answer
   x = 7,512,452.44