Finding the Third Proportional to 1,906,388 and 4,190,608

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906,388 : 4,190,608 = 4,190,608 : x
2. Step 2: Convert to fraction form
   1,906,388/4,190,608 = 4,190,608/x
3. Step 3: Cross multiply
   1,906,388x = 4,190,608 × 4,190,608
4. Step 4: Simplify right side
   1,906,388x = 17,561,195,409,664
5. Step 5: Solve for x
   x = 17,561,195,409,664/1,906,388
6. Step 6: Final answer
   x = 9,211,763.51