Finding the Third Proportional to 5,615,760 and 12,128,172

Step by Step Solution

1. Step 1: Write the proportion equation
   5,615,760 : 12,128,172 = 12,128,172 : x
2. Step 2: Convert to fraction form
   5,615,760/12,128,172 = 12,128,172/x
3. Step 3: Cross multiply
   5,615,760x = 12,128,172 × 12,128,172
4. Step 4: Simplify right side
   5,615,760x = 147,092,556,061,584
5. Step 5: Solve for x
   x = 147,092,556,061,584/5,615,760
6. Step 6: Final answer
   x = 26,192,813.81