Finding the Third Proportional to 1,919,388 and 4,200,360

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,388 : 4,200,360 = 4,200,360 : x
2. Step 2: Convert to fraction form
   1,919,388/4,200,360 = 4,200,360/x
3. Step 3: Cross multiply
   1,919,388x = 4,200,360 × 4,200,360
4. Step 4: Simplify right side
   1,919,388x = 17,643,024,129,600
5. Step 5: Solve for x
   x = 17,643,024,129,600/1,919,388
6. Step 6: Final answer
   x = 9,192,005.02