Finding the Third Proportional to 3,213,820 and 4,980,381

Step by Step Solution

1. Step 1: Write the proportion equation
   3,213,820 : 4,980,381 = 4,980,381 : x
2. Step 2: Convert to fraction form
   3,213,820/4,980,381 = 4,980,381/x
3. Step 3: Cross multiply
   3,213,820x = 4,980,381 × 4,980,381
4. Step 4: Simplify right side
   3,213,820x = 24,804,194,905,161
5. Step 5: Solve for x
   x = 24,804,194,905,161/3,213,820
6. Step 6: Final answer
   x = 7,717,978.89