Finding the Third Proportional to 3,645,567 and 7,977,690

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,567 : 7,977,690 = 7,977,690 : x
2. Step 2: Convert to fraction form
   3,645,567/7,977,690 = 7,977,690/x
3. Step 3: Cross multiply
   3,645,567x = 7,977,690 × 7,977,690
4. Step 4: Simplify right side
   3,645,567x = 63,643,537,736,100
5. Step 5: Solve for x
   x = 63,643,537,736,100/3,645,567
6. Step 6: Final answer
   x = 17,457,788.52