Finding the Third Proportional to 3,977,984 and 8,708,320

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977,984 : 8,708,320 = 8,708,320 : x
2. Step 2: Convert to fraction form
   3,977,984/8,708,320 = 8,708,320/x
3. Step 3: Cross multiply
   3,977,984x = 8,708,320 × 8,708,320
4. Step 4: Simplify right side
   3,977,984x = 75,834,837,222,400
5. Step 5: Solve for x
   x = 75,834,837,222,400/3,977,984
6. Step 6: Final answer
   x = 19,063,635.56