Finding the Third Proportional to 1,993,788 and 4,386,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,993,788 : 4,386,312 = 4,386,312 : x
2. Step 2: Convert to fraction form
   1,993,788/4,386,312 = 4,386,312/x
3. Step 3: Cross multiply
   1,993,788x = 4,386,312 × 4,386,312
4. Step 4: Simplify right side
   1,993,788x = 19,239,732,961,344
5. Step 5: Solve for x
   x = 19,239,732,961,344/1,993,788
6. Step 6: Final answer
   x = 9,649,838.88