Finding the Third Proportional to 3,977,988 and 8,708,328

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977,988 : 8,708,328 = 8,708,328 : x
2. Step 2: Convert to fraction form
   3,977,988/8,708,328 = 8,708,328/x
3. Step 3: Cross multiply
   3,977,988x = 8,708,328 × 8,708,328
4. Step 4: Simplify right side
   3,977,988x = 75,834,976,555,584
5. Step 5: Solve for x
   x = 75,834,976,555,584/3,977,988
6. Step 6: Final answer
   x = 19,063,651.41