Finding the Third Proportional to 12,782,043 and 17,978,796

Step by Step Solution

1. Step 1: Write the proportion equation
   12,782,043 : 17,978,796 = 17,978,796 : x
2. Step 2: Convert to fraction form
   12,782,043/17,978,796 = 17,978,796/x
3. Step 3: Cross multiply
   12,782,043x = 17,978,796 × 17,978,796
4. Step 4: Simplify right side
   12,782,043x = 323,237,105,609,616
5. Step 5: Solve for x
   x = 323,237,105,609,616/12,782,043
6. Step 6: Final answer
   x = 25,288,375.70