Finding the Third Proportional to 3,479,712 and 4,900,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,479,712 : 4,900,128 = 4,900,128 : x
2. Step 2: Convert to fraction form
   3,479,712/4,900,128 = 4,900,128/x
3. Step 3: Cross multiply
   3,479,712x = 4,900,128 × 4,900,128
4. Step 4: Simplify right side
   3,479,712x = 24,011,254,416,384
5. Step 5: Solve for x
   x = 24,011,254,416,384/3,479,712
6. Step 6: Final answer
   x = 6,900,356.82