Finding the Third Proportional to 3,409,380 and 7,350,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,409,380 : 7,350,128 = 7,350,128 : x
2. Step 2: Convert to fraction form
   3,409,380/7,350,128 = 7,350,128/x
3. Step 3: Cross multiply
   3,409,380x = 7,350,128 × 7,350,128
4. Step 4: Simplify right side
   3,409,380x = 54,024,381,616,384
5. Step 5: Solve for x
   x = 54,024,381,616,384/3,409,380
6. Step 6: Final answer
   x = 15,845,808.22