Finding the Third Proportional to 7,798,538 and 12,123,086

Step by Step Solution

1. Step 1: Write the proportion equation
   7,798,538 : 12,123,086 = 12,123,086 : x
2. Step 2: Convert to fraction form
   7,798,538/12,123,086 = 12,123,086/x
3. Step 3: Cross multiply
   7,798,538x = 12,123,086 × 12,123,086
4. Step 4: Simplify right side
   7,798,538x = 146,969,214,163,396
5. Step 5: Solve for x
   x = 146,969,214,163,396/7,798,538
6. Step 6: Final answer
   x = 18,845,739.31