Finding the Third Proportional to 3,390,984 and 5,121,036

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390,984 : 5,121,036 = 5,121,036 : x
2. Step 2: Convert to fraction form
   3,390,984/5,121,036 = 5,121,036/x
3. Step 3: Cross multiply
   3,390,984x = 5,121,036 × 5,121,036
4. Step 4: Simplify right side
   3,390,984x = 26,225,009,713,296
5. Step 5: Solve for x
   x = 26,225,009,713,296/3,390,984
6. Step 6: Final answer
   x = 7,733,746.23