Finding the Third Proportional to 1,964,128 and 4,238,108

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964,128 : 4,238,108 = 4,238,108 : x
2. Step 2: Convert to fraction form
   1,964,128/4,238,108 = 4,238,108/x
3. Step 3: Cross multiply
   1,964,128x = 4,238,108 × 4,238,108
4. Step 4: Simplify right side
   1,964,128x = 17,961,559,419,664
5. Step 5: Solve for x
   x = 17,961,559,419,664/1,964,128
6. Step 6: Final answer
   x = 9,144,800.86