Finding the Third Proportional to 3,490,440 and 5,120,748

Step by Step Solution

1. Step 1: Write the proportion equation
   3,490,440 : 5,120,748 = 5,120,748 : x
2. Step 2: Convert to fraction form
   3,490,440/5,120,748 = 5,120,748/x
3. Step 3: Cross multiply
   3,490,440x = 5,120,748 × 5,120,748
4. Step 4: Simplify right side
   3,490,440x = 26,222,060,079,504
5. Step 5: Solve for x
   x = 26,222,060,079,504/3,490,440
6. Step 6: Final answer
   x = 7,512,537.12