Finding the Third Proportional to 7,881,298 and 16,978,404

Step by Step Solution

1. Step 1: Write the proportion equation
   7,881,298 : 16,978,404 = 16,978,404 : x
2. Step 2: Convert to fraction form
   7,881,298/16,978,404 = 16,978,404/x
3. Step 3: Cross multiply
   7,881,298x = 16,978,404 × 16,978,404
4. Step 4: Simplify right side
   7,881,298x = 288,266,202,387,216
5. Step 5: Solve for x
   x = 288,266,202,387,216/7,881,298
6. Step 6: Final answer
   x = 36,575,980.55